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E20-562 exam Dumps Source : VPLEX Specialist Exam for Storage Administrators
Test Code : E20-562
Test Name : VPLEX Specialist Exam for Storage Administrators
Vendor Name : EMC
Q&A : 66 Real Questions
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EMC VPLEX Specialist Exam for
With greater than 12 PB of records beneath administration spanning across SAN, NAS, object and hyper-converged methods from a couple of companies, checking out and evaluating storage are most important projects at manhattan lifestyles coverage Co.
David Burman, company vice chairman of business know-how at long island lifestyles, remaining yr purchased Load DynamiX -- now part of digital gadgets -- storage analytics, validation and testing equipment to support lighten his load. Load DynamiX storage analytics helps Burman control the systems he has and test programs he is considering buying.
big apple life is a mutual lifestyles assurance business, with greater than $500 billion in assets beneath administration. The firm has company data facilities in New Jersey and Georgia, with smaller records centers in Florida and Texas. together with 12 PB of storage, the insurance company has greater than 6,000 functions and 3,000 database cases.
Burman noted new york existence puts its tier-one open and mainframe storage on EMC VMAX, tier-two block storage on VNX, and uses NetApp for NAS. He also these days bought EMC VPLEX for block storage virtualization and Nutanix hyper-converged programs.
he's evaluating all-flash arrays, hybrid cloud technologies and looking for an object storage equipment to change his EMC Centera. He can use Load DynamiX for all of those tasks, in addition to stress-check new points and new code upgrades for his creation storage.
"We're a life assurance company and relatively conservative," Burman pointed out. "The last issue I wish to do is introduce new code that has negative have an effect on on my ambiance."
In late 2015, long island existence bought a Load DynamiX Unified series storage analytics equipment, with Fibre Channel and Ethernet ports, and cargo DynamiX commercial enterprise software. Burman originally purchased DynamiX to test NAS gateways, however has on the grounds that found new uses for it, together with evaluating new technologies and testing updates to storage systems in production.
"There are dramatic alterations going on in storage technology -- as an awful lot as I've ever considered," Burman referred to. "To have tools a good way to make sure of what we're deploying in creation become a simple promoting aspect."
Flash, hyper-convergence and cloud are among the many new applied sciences the insurance company has applied and should doubtless expand.
"I have flash in every array, but I won't have dedicated flash arrays," Burman noted, including that he is evaluating all-flash arrays from EMC, Pure Storage and Hewlett Packard business 3PAR.
"one of the vital factors I introduced in Load DynamiX become to facilitate and expedite contrast of latest applied sciences," Burman noted. "The proof of idea with Load DynamiX become to consider NAS know-how, but that changed into just one use case."
Burman pointed out Load DynamiX simplifies the storage analytics technique. for instance, as a substitute of building a large server farm, with many virtual machines to look at various flash storage, he can simulate and shop workloads in Load DynamiX. He can also use it to compare his workloads with how they looked months in the past.
Burman talked about he decided now not to enforce thin provisioning on VNX after Load DyanmiX showed him how it would have an effect on efficiency. Load DynamiX also helped him determine what tuning became necessary when he implemented VPLEX.
"it be for tons greater than just evaluating platforms," Burman referred to. "i take advantage of it anytime we get new code or any new patches from EMC or NetApp. We at all times examine issues in our lab first, however we had no respectable means of stress-checking out this. Now, as we load it into our test lab, we now not handiest do performance checking out, but we do stress testing using key workloads that now we have loaded into Load DynamiX. it's a daily a part of our implementation of recent code. We additionally use it to check new elements.
"Analytics is another key part of it. To verify flash, i might doubtless want many virtual machines. Then, to try and compile the information, and process it and do analysis of it could be extremely guide effort. here is simplified. and that's the reason an incredible understatement."
Burman labored at EMC for 12 years, however he'll purchase different companies' storage when it makes experience. He has a large NetApp NAS setting up, and is currently migrating to Clustered facts Ontap from statistics Ontap 7 Mode. That migration has given many NetApp purchasers pause. Burman referred to ny life began the migration in late 2015, and he expects to be complete by way of September. Load DynamiX offers some hand-retaining with that challenge.
"We use it for validation. It gives us the warm and fuzzies," he pointed out. "we can do stress testing of CIFS and NFS efficiency earlier than we do the cutover for these workloads to Cluster Mode."
Burman mentioned he intends to make use of Load DyanmiX's new storage analytics digital equipment to examine his hyper-converged bins. And he is looking for Load DynamiX to add facets following its merger with monitoring vendor virtual gadgets, which makes SAN taps.
"I feel there is massive synergy between both groups," Burman referred to. "i know that Load DynamiX turned into taking a look at community taps to boost their seize of application workloads to load into their appliances. making use of the hardware [and] software applied sciences that virtual gadgets already has, I predict, will provide a an awful lot more timely and greater effective answer.
"also, gathering real-time workloads that may feed the load DynamiX appliances will facilitate the tuning of workloads in a nonproduction ambiance, however the use of production traits."
can also 1st, 2018 by using Brian Beeler
today Dell EMC has announced the addition of native asynchronous replication in XIOS 6.1 for XtremIO all-flash storage arrays. before, replication for XtremIO has been handled by means of utility tools like Dell EMC RecoverPoint for photograph-based replication or site healing manager for VMware shops. There're additionally the options of pairing XtremIO and Dell EMC VPLEX for a whole lot of replication use circumstances. whereas these alternatives solve the issue for many clients, they can also introduce accelerated complexity and price, counting on the hardware in the ambiance. As such, a native metadata-mindful replication answer for XtremIO has all the time been on the radar and is the number one feature XtremIO purchasers have been inquiring for.
Most understand this already, but let's take just a quick look at the two sorts of replication. Asynchronous replication allows for replication over a protracted distance (100s of miles or extra) whereas conserving a stylish write-consistent copy of records between the native and remote web page(s) perpetually. With synchronous replication, the gap between sites needs to be a lot nearer, typically observed in terms of a metro area (~30-50 miles). at times, some clients even replicate within a single records center, counting on statistics needs and regulatory requirements. in spite of everything, a host initiates a write to an array on the main website while at the same time facts is written to the replication target. facts need to be successfully stored in each native and far flung websites earlier than an acknowledgement is shipped returned to the host. Synchronous replication introduces further latency because of this, which is why being physically close to the replication target is critical. whereas some industries require synchronous replication, the colossal majority find asynchronous replication proper for his or her business requirements.
With XIOS 6.1, WAN optimization is a key emphasis and XtremIO is neatly-acceptable to aid execute on this purpose. it's vital to be aware that XtremIO does its facts compression and deduplication inline, and the arrays depend on metadata tables for pointers as to the place to find a duplicated block. This efficiency lends itself smartly for replication for just a few motives. First, handiest pleasing records is distributed to the remote web site; blocks that exist already on the goal on no account go over the community. second, simplest compressed facts is distributed to the faraway web page. These factors give XtremIO a significant optimization capabilities that helps to ensure restoration desires are met. The replication load on the equipment is minimal, so there is certainly not a necessity to disable replication or be concerned about a performance hit to the different native statistics features. whereas different competitive arrays present replication, Dell EMC argues that XtremIO is arguably one of the vital most appropriate due to the inherent architecture design.
the place the replication can get even more fun from an effectivity viewpoint is in multi-web page, fan-in configs. So in place of being a one-to-one ratio of main-to-faraway websites, a firm may have several XtremIO arrays replicating to a single target. as a result of world dedupe is in play, Dell EMC anticipates an extra 38% potential mark downs (four:1 fan-in setup) for the replication target array. once again, there are big WAN gains as neatly due to the reduced movement of records over the textile.
With the diverse replication use situations, XtremIO is designed around being tremendously configurable when it comes to how the ports are assigned for local storage access versus dedicated links for replication. during this setup, the unit has 2 SFP+ 10G connectors in addition to one 10Gbase-T connection per controller allocated for replication, with two ports per controller configured for FC access.
besides the replication news, Dell EMC additionally has launched the XtremIO X2-T. The X2-T presents the entire facets and data functions of the XtremIO family in a reduce-charge configuration designed for the midrange. X2-T comes in a single X-Brick configuration that scales from 34.5TB raw up to sixty nine.1TB uncooked or 369TB constructive means given a 6:1 storage effectivity. X2-T is available may additionally third.
features don't mean lots if they're cumbersome or perplexing to enforce. Dell EMC has spent a pretty good deal of time ensuring that replication configuration is elementary. The complete technique is wizard-pushed, making setup of replication and retention guidelines quick and intuitive. A wizard inside the information insurance plan menu publications the administrator throughout the manner, which is handy to make use of and intuitive for beginner to skilled users. Of course, CLI is accessible for advanced users, but there may be first rate demand for each CLI and the HTML interface.
the first step ahead of creating a insurance plan session is creating a consistency community according to the volumes you intend on protecting. This may also be accomplished with clicking the "New" button and coming into in a consistency neighborhood name.
subsequent you opt for the volumes you need to be inner of it. Volumes can be manually selected from the complete list or narrowed down via a keyword search. This process is fundamental, yet essential to be sure parity between the leading array and replication goal via making certain a healthy at each sites, getting rid of consumer error. When finished click on "follow."
With the consistency group in place, you circulation into the records coverage menu. here's where that you would be able to view latest blanketed Entities and get excessive-degree tips of each at a short glance.
To create a new insurance plan Session, you beginning with determining the consistency group for your volumes. in this case, we use our previously created Linux-Prod-01 community with 8 volumes. within the identical reveal that you can additionally opt for if this may be a far flung or native insurance plan class.
As a faraway insurance plan type, the subsequent reveal is where you select the goal cluster.
In here menu, the XtremIO will both immediately create a consistency neighborhood on the target cluster of the equal identify you created locally, or enable directors to create one manually. target-volume entry restrictions are additionally set at this stage.
next, directors are in a position to set the RPO (which can be adjusted anywhere from 30 seconds to 1 day, as neatly as the source retention policy. These are incredibly customizable and might be tuned for the accurate software working on the storage group being protected, accounting for features like alternate price and WAN impact/charges. The RPO should be monitored for compliance, as the fee of records trade and bandwidth of the connection between both systems will dictate how speedy records can be replicated to a definite extent.
finally, the target retention policy is selected, which can also be duplicated from the supply array, or can also be customized one at a time for the target equipment (reckoning on the use case). This allows for for varied copies at either area according to scheduling it truly is stylish on a firm's photo requirements, i.e., how a good deal insurance plan they desire at intervals like minute, hour, day, week and so forth.
The book completes with a summary window displaying the chosen options, with an alternative to finish, or finish and start the coverage policy immediately.
After the information coverage coverage is put into area, which you could view its matching assistance, such as the volumes under, and start to populate on the goal array.
With the new data protection Session in vicinity, the equal interface window permits administrators to birth and prevent insurance plan services counting on the circumstances. This may also be advantageous if a policy is operating a whole lot longer than commonplace, of if whatever needs to be replicated outdoor of the window targeted.
After the statistics protection is in location, the XtremIO interface offers directors visibility into the day-to-day assistance. At a short glance which you can view the bandwidth on the connection, how lots statistics has traversed between the devices, the RPO compliance in addition to many other high-degree stats. protected classes now not meeting their SLA requirements are instantly familiar, whereas these working as meant blend away into the history.
interior reporting through the XtremIO array is very useful when monitoring records insurance policy in terms of the saturation tiers of your outbound hyperlinks, as well as figuring out how tons headroom is left in response to spikes in bandwidth throughout the day or week. under we see the target array and the bandwidth used for far off insurance policy.
With information insurance policy classes in place, administrators are also able to delivery a failover technique manually, leveraging both the local device, or failing over to the far off system wholly.
Of route, the headline with this XtremIO update is native replication, however let's not look past the XtremIO X2-T as smartly. This new single X-Brick scales from 34.5TB uncooked as much as sixty nine.1TB uncooked or 369TB beneficial ability given a 6:1 storage effectivity. The X2-T offers Dell EMC a new tool to carry XtremIO's power and deep characteristic set to midmarket and smaller far flung operations. additionally, within the context of the replication news, the X2-T presents some shoppers a decrease cost alternative as a replication target for those now not pushing the ability of their XtremIO containers as in anything like VDI where the inline statistics reduction functions are in a position to be extraordinarily effective.
Digging into the native asynchronous replication notably, XtremIO changed into clearly constructed for this role. Their emphasis on metadata because the authority for facts dwelling makes XtremIO an incredible platform when because replication efficiency. because the entire information on the host device is compressed, deduped and compared to regular facts inline, XtremIO writes only happen for brand new blocks, the place present blocks get a pointer update within the metadata. This efficiency extends to the replication website now as neatly with XIOS 6.1, as best new records is passed over the WAN. These network weight advantages get prolonged extra in a fan-in state of affairs the place as much as four XtremIO arrays replicate to a single goal.
These efficiencies mean little, youngsters, if replication is difficult to install and control or if the consequences are unreliable. Above we walked through the very essential wizard-driven method for configuring consistency agencies and statistics coverage policies. whereas all of here's purchasable by means of CLI as smartly, XIOS 6.1 makes the system convenient satisfactory that non-storage consultants should still be in a position to tackle the project with no trouble. The constructed-in checks and failover checking out are accessed with drop downs and menus that are intuitive and make sure guidelines are competently configured. there's additionally a straightforward-to-take into account dashboard that confirms (or not) that your RPO pursuits are being met with a detailed view of your SLAs and other vital tips.
We didn't complete a deep dive of efficiency as a part of this assessment, although we did have a number of workloads operating in opposition t the X-Bricks beneath test throughout the period of our replication configuration. here's not absolutely scientific, however with a couple of replication jobs install and working, we did not see any considerable performance drop as these jobs kicked off and completed in perpetuity within their 30-2d home windows. here's attributed again to the efficiency of ways XtremIO was designed from day one. notwithstanding replication wasn't present then, the XtremIO group had a vision for where they wanted to be and with XIOS 6.1, they may be an additional large step along the path. As replication turned into the most requested characteristic by XtremIO purchasers, there may be prone to be a little extra buzz round Dell applied sciences World this week as XtremIO shoppers expect what they will be able to do once the XIOS update hits their packing containers. XIOS 6.1 with replication is attainable now as a free replace to XtremIO X2 consumers.
Dell EMC XtremIO
discuss this evaluation
Transformation of IT results in progressive trade in business operations. This become one of the core messages to return out of the EMC discussion board 2012 experience, held lately in Gauteng, South Africa, focussing on how cloud, virtualisation and large records solutions can power this stage of transformation.
Brian Gallagher, President of EMC’s business Storage Division, gives you a keynote at the forum. (photograph: EMC)
The EMC discussion board (South Africa) 2012 became hosted by means of EMC Southern Africa and fashioned a part of a series of EMC boards taking region across Europe, the middle East and Africa. It become attended by using close on 1,000 of EMC Southern Africa’s valued clientele and companions in addition to media representatives and analysts.
Servaas Venter, performing country supervisor of EMC Southern Africa, stated the day became all about how cloud is reworking IT, how big statistics is remodeling enterprise and how americans can radically change themselves in the manner.
“Our intention is to support our consumers achieve this transformation efficaciously,” he referred to. “by means of discovering in regards to the newest developments in cloud and large records – and figuring out the huge implications they've for the future of business and IT –individuals will also be able to evolve their enterprise, their position inside it and themselves, thereby making bound they remain aggressive. The EMC forum 2012 offered the insight to facilitate that.”
The keynote handle turned into delivered via Brian Gallagher, President of EMC’s commercial enterprise Storage Division. other presenters covered Derek Barrett, Senior consultant of EMC’s government Briefing Centre in eire; Sebastian Darrington, Director of expert sales, EMC EMEA; Kelly Brown, EMEA Director of Product advertising, Backup and recuperation methods, EMC; Zion Gabai, Isilon revenue Director, EMC; and Brett Quinn, Technical Director, zSeries utility development, EMC.
EMC also hosted arms-On vLabs, the place delegates were able to spend time with EMC’s portfolio of cloud and massive facts enabling products. It turned into the top-rated possibility to learn the way EMC items integrate with VMware to deliver the most beneficial visibility and administration of the cloud. Delegates received an realizing of the way to comfy, backup and offer protection to their cloud, VMware and EMC environments with vLabs featuring Avamar, RSA and VPLEX. They also verify drove some of EMC’s latest storage items – VMAX, VNX and VNXe – all powered by using the EMC vCloud.
“historically, IT has pushed business effectivity by taking initiatives executed with the aid of many people and doing it more suitable with fewer substances. enterprises these days can go beyond this by way of reworking their company and IT via cloud, huge records and storage technologies to turn into greater effective, analytical and dynamic than ever before. The forum discussed the accelerating tempo of transformation and the surprising alternatives it presents groups,” Venter observed.
Chris Tredger, online Editor
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VPLEX Specialist Exam for Storage Administrators
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Though all medications have an expiration date on their packaging, most stay potent long after that date.
Tablet medications like ibuprofen remain effective for years after being opened.
Probiotics and liquid medicines deteriorate faster.
Just like food, medication is required by law to have an expiration date on its packaging. But how long past that date can you keep using your over-the-counter and prescription drugs? And is it safe to take expired medicine?
INSIDER talked to medical experts to find out how long you can keep using some common medications after opening them.
In most cases, the expiration date on medication doesn't mean what you think it does
The expiration date on the packaging of OTC and prescription drugs doesn't necessarily reflect when the product expires.
"The vast majority of medications maintain most of their potency years after the posted expiration date. That date is the date after which full potency cannot be guaranteed by the manufacturer," emergency-medicine specialist Dr. Jack Springer told INSIDER.
Studies conducted by independent researchers and the Food and Drug Administration have found that common drugs retain nearly all their potency many years after the posted expiration date.
"The expiration date doesn't really indicate a point at which the medication is no longer effective or has become unsafe to use," Springer said. "Medical authorities state if expired medicine is safe to take, even those that expired years ago."
There are exceptions; some medications and drug types undergo changes during extended storage that can compromise their safety or effectiveness. Liquid medications and some antibiotics are among these.
Keeping in mind that most OTC medications in tablet or capsule form are safe to use for many years after their expiration date, here are some guidelines on how to manage the drugs in your medicine cabinet.
Use Ibuprofen within 4 to 5 years of opening
Ibuprofen in tablet form, which brands including Advil sell, is at its most potent within four to five years of opening, but it's safe to consume for many years after.
Dr. Kim Langdon, a clinical adviser at digital-health startup Medzino, told INSIDER that liquid suspensions of ibuprofen are "more susceptible to contamination" and that they should be refrigerated. "The expiration dates are somewhat arbitrary and required by regulations, but the most significant risk is that they lose effectiveness over time rather than a safety issue," Langdon said.
Store liquid and tablet ibuprofen in a cool, dry space away from sunlight.
Tylenol, or acetaminophen, is best within 4 to 5 years
Just like ibuprofen, acetaminophen should be used within four to five years of opening and liquid forms should be used by the printed expiration date, according to Langdon.
Keep your acetaminophen in a dry area below 77 degrees Fahrenheit and away from sunlight.
Aspirin is most effective within 5 years
Aspirin is also safe and effective for years after the expiration date on the label.
Langdon said the humidity and heat of the bathroom make it a bad place to store medications. Opt for a container in a dark, dry spot, such as a secure closet or cabinet, instead.
Antibiotics should be used immediately as prescribed, but most can last at least a year
Most prescribed antibiotics are suitable for one year.
"Almost all antibiotics are prescribed for a full course, and therefore there should not be any leftovers," Langdon said. "In the case of daily or chronic use, one year from dispensing is the safe expiration date."
Liquid antibiotics need to be reconstituted after the expiration date the pharmacist gives, so they should be used immediately.
Use cough syrup by the expiration date on the package
As a liquid medication, cough syrup breaks down more quickly and doesn't stand up as well as dry medication to long-term storage.
"Store cough syrup in the refrigerator if you want to prolong the effectiveness and taste. The risk of contamination is based on the number of openings and time," Langdon said.
To keep your cough syrup from being contaminated, never drink directly from the bottle and don't insert any objects into the bottle unless a physician tells you to.
Read more: Here's why parents should never give over-the-counter cough and cold medicine to kids under 6
Cough syrup breaks down faster than dry medication.greenland/Shutterstock
Nasal sprays contain preservatives that deteriorate
Nasal sprays usually contain preservatives that keep them safe to use. As time passes, the quality of the preservatives can degrade.
"Preservatives are the most likely ingredients to expire in nasal sprays," Langdon said. "This may increase the risk of contamination."
Following the instructions on the container is the best way to make sure you're using safe, effective nasal spray.
Regularly replace eye drops
Any product that comes in contact with the eyes, such as drops or mists, should be replaced as soon as they expire.
"Aerosol products may get contaminated over time," Langdon said. "Eyes are especially susceptible to bacterial contamination."
Though it's safe to keep eye drops that have not expired, you should take special care to keep the packaging clean.
Sleeping pills can lose their potency over time, which can be hazardous
Though nonprescription sleeping pills will remain safe to use for years after opening, they may become less potent. This can make using them more dangerous.
"OTC sleeping pills have a low risk of expiration or causing any problems, except that they may lose potency and trigger multiple doses, some of which may be more potent than others," Langdon said.
This means that someone taking a less potent, expired sleeping pill may take additional pills to help them fall asleep, inadvertently consuming too large a dose. To be safe, replace sleeping pills soon after they expire.
Allergy medicine in tablet form can be used for over decade after opening
If you have expired antihistamines hanging around in your medicine cabinet, they're probably still effective.
"Diphenhydramine, a common antihistamine, was studied to last almost 15 years in the tablet form," Langon said, but added that "liquid OTC antihistamines should be discarded on their expiration date."
Most drug companies test for effectiveness only for the first two to three years after opening, which is why labels rarely list a later expiration date.
Use Valium within one year
Because diazepam, which is sold under names including Valium, is a prescription drug, there are additional guidelines for its expiration date.
"As a prescription drug, pharmacies limit the use [of Valium] for one year from dispensing," Langdon said.
As with most medications, store it in a cool, dry place away from direct light.
Because probiotics are alive, it's best to use them as soon as possible
Because probiotics are alive, they can become far less effective over time or if they're improperly stored.
"Probiotics are living bacteria and will be subject to inactivity over time. It's best to them discard based on the manufacturer's guideline, which is usually one year," Langdon said.
To keep your probiotics fresh and effective, store them in a cool place away from sunlight. Some probiotics should be kept in the refrigerator.
Adderall should be used within one year of opening
As prescription drugs, Adderall and Mydayis should be used according to your physician's instructions and consumed within one year.
"One year is the usual expiration date, with less potency being the primary risk after that date," Langdon said.
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DOWNERS GROVE, Ill., Aug. 22, 2018 /PRNewswire/ -- CompTIA, the leading provider of vendor-neutral skills certifications for the information technology (IT) workforce, today launched the beta exam for its anticipated new version of the CompTIA Linux+ credential.
CompTIA Linux+ is an internationally-recognized, vendor-neutral validation of the technical competencies required of early to mid-career IT professionals who use Linux.
"Linux has a strong and growing presence in large-scale, distributed cloud platforms; in nearly all security appliances; in most devices that provide network functionality; in smartphones, tablets, smart appliances, GPS devices, car navigation systems, and hundreds of other Internet of Things devices; and in high performance computing clusters," said Kristin Ludwig, director, product management, CompTIA. "It has become a core skillset for technology professionals. The new CompTIA Linux+ exam reflects this reality."
The new exam was created according to CompTIA's comprehensive and rigorous test-development process. It is based on input from Linux subject matters experts from the United States, Europe, Australia, Central America, and South America.
Among the notable changes, test takers must pass only one exam to become CompTIA Linux+ certified. The current version requires individuals to pass two separate exams.
The beta exam (XK1-004) also includes performance-based questions and hands-on simulations that reflect real-world scenarios that IT professionals encounter when working with Linux in an enterprise environment.
"The new exam has a sharper focus on the most highly relevant Linux skills," Ludwig said. "It's written for today's times. We've increased the emphasis on security, Git revisions, virtualization, and other competencies that today's technology professionals must have."
Unlike vendor-specific certifications, CompTIA Linux+ covers multiple distributions, validating skills that help prevent platform lock-in and promote more flexible approaches to Linux system troubleshooting. Concepts covered by the exam include system configuration, command line interface, scripting basics, network settings and services, and system security.
Technology professionals who would benefit from becoming CompTIA Linux+ certified hold job titles such as Linux administrator, network administrator, systems administrator, intrusion detection technician, penetration tester, Linux developer, mobile app developer, storage engineer, Hadoop administrator, network support specialist, and technical support specialist.
CompTIA recommends that test takers have nine to twelve months of hands-on experience configuring, monitoring and supporting physical and virtual Linux servers.
The CompTIA Linux+ beta exam is available worldwide in an English-language version. The cost of the beta exam is $50. Beta test takers will be notified of their results in April 2019, after the launch of the official exam. Individuals who earn a passing score will become CompTIA Linux+ certified.
To register for the beta exam visit https://www.pearsonvue.com/comptia. Exam objectives are available at https://certification.comptia.org/certifications/linux.
The Computing Technology Industry Association (CompTIA) is a leading voice and advocate for the $4.8 trillion global information technology ecosystem; and the more than 35 million industry and tech professionals who design, implement, manage, and safeguard the technology that powers the world's economy. Through education, training, certifications, advocacy, philanthropy, and market research, CompTIA is the hub for advancing the tech industry and its workforce. Visit www.comptia.org to learn more.
View original content with multimedia:https://www.prnewswire.com/news-releases/comptia-linux-certification-beta-exam-launches-300700891.html
A recent Forrester report found that only 22% of companies see a return on investment (ROI) from data science. Given the tantalising opportunities that data science, artificial intelligence (AI) and advanced analytics promise business, why do most initiatives fail?
For Harvinder Atwal, head of data strategy and advanced analytics at price comparison site MoneySuperMarket.com, part of the problem is that the mantra is wrong. He believes many business leaders have little idea of how to create value with data.
“The C-suite doesn’t understand data,” he says. “They understand the need to hoard data and hire data scientists – but then they think magic happens.”
Atwal thinks there is also a misconception in what business sees as the role of data scientists. For instance, although strong control of finance is clearly important in business, no one expects everyone to be a finance specialist. But in Atwal’s experience, there is an expectation in businesses that data scientists can share their expertise across the company. “Data scientists are expected to teach the organisation how to use data,” he says.
Then there is the AI silver bullet. “Marketing thinks AI will solve all their problems,” he says. Because data scientists are not cheap and hoarding data is expensive, this lack of understanding means that the money invested in data projects appears to flow in the wrong direction, he points out.
Atwal previously worked at Dunnhumby as insight director for Tesco Clubcard. Describing how MoneySuperMarket.com uses analytics, he says: “Our mission is to use our data to help customers save money.”
He says MoneySuperMarket.com captures more data about its customers than an average website. The information gleaned includes where they live, what they drive, where they go on holiday. The site also knows when a customer’s insurance is up for renewal or when their utility is about to switch from a discounted to a standard tariff.
“We can save people £1,000 if they come to our site, but it requires machine learning for personalisation,” says Atwal.
Basically, MoneySuperMarket.com recommends products rather like how Amazon or Netflix recommends things. But people have very different attitudes about money: some are extremely cautious, while others may be more open to risk.
For MoneySuperMarket.com, this means that customers only see offers of products that are relevant to them and fit within their risk profile. The architectural changes and approach that the company has taken has allowed it to create 1,400 variant newsletters for its customers, which Atwal says has resulted in a “decent revenue uplift”.
Broken IT processes
For Atwal, creating the actual model is by far the easiest part of machine learning, but 90% of the conversation appears to be about this. He says the real problem for data scientists is that they have to do everything themselves – find data, clean the data, find the software and install it.
“IT is stuck in a 20th century operating model,” he says. “People don’t have access to data warehouses.”
This poses a real challenge for data scientists, says Atwal, who have to request data access from IT, negotiate with IT for the required compute resources, then wait for these resources to be provisioned. They may then need to install a query language.
“As a data scientist, you just want to use data as quick as possible,” says Atwal. In his experience, the rigmarole experienced by data scientists when doing their job means that they often choose to bypass IT and test, build and deploy data models on their own laptops.
But he does not believe this is the right approach either. “Data scientists will spend a lot of time building the perfect model on a laptop,” he says, but while it is being tuned on a laptop, the model is not finding real uses for the business – so it remains isolated.
Atwal believes data scientists should be able to get feedback when the model is deployed for real, to enable them to enhance it or build new data models based on real customer data.
Simplify the data architecture
When Atwal joined MoneySuperMarket.com in 2012, the company was deploying SAS to provide a single customer view. “We made a decision to move over to AWS [Amazon Web Services], but had data stores scattered all over the business,” he says.
Although it was relatively easy to move the website, migrating the data warehouse was very complex, says Atwal. The company had a multi-cloud strategy, which meant it was not possible to use any services specific to AWS. Instead, he says, MoneySuperMarket.com had to manage and deploy an open source software stack.
“We began building a stack in AWS with storage and analytics layers, deployed this in production, then built data products,” he says. But this was not an easy approach because it required database administrators, DevOps teams and agile data science. “We didn’t have the expertise,” he adds.
When it was time to migrate from SAS, MoneySuperMarket.com took the opportunity to run a proof of concept on GCP, using Google’s serverless software components, including Big Query, Kubernetes, Dataflow and TensorFlow.
This enabled the company to simplify its data architecture. Based on Google’s reference architecture, MoneySuperMarket.com was able to deploy serverless and software-as-a-service technology, which meant there was no infrastructure to manage, enabling the data science teams to concentrate on getting their work done on GCP, says Atwal.
Improving data science workflow
Atwal says most data scientists do not come from a software development background and do not understand software development best practices. To improve the investment that companies make in data science, he believes new data models need to be created more quickly. This requires data scientists to use agile collaboration and to apply lean thinking to data analytics, while adhering to data regulations and governance.
As in software development, where developers have used DevOps to produce code rapidly through regular iterations, automated tested is also needed. And like in software development, data scientists also need to ensure the data on which they base their model is correct, and that there is version control in place to ensure changes can be tracked, says Atwal.
These are among the main requirements in DataOps, which aims to speed up the process of building new data models that achieve measurable business results. Ideally, a data scientist would want to download a working environment and get to work straight away without having to configure everything in that environment. Containers give businesses a way to achieve this, says Atwal.
A number of so-called data science platforms are starting to emerge that support DataOps. Domino Data Lab is the one MoneySuperMarket.com has deployed. Atwal says it offers a way to provide self-service for its data scientists to work.
Atwal has spoken at a number of events about how MoneySuperMarket.com has rearchitected its data analytics. His presentation, which covers nine steps to transform data science and move organisations towards DataOps, draws on lean principles that Toyota used to optimise car manufacturing, and agile software development practices.
Ultimately, he says, data scientists need to be cognisant of business strategy. “Business has a hypothesis of what creates value,” he says. “Think about flow and how quickly you can get data into a product to get feedback from customers.”
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