Monday, February 23, 2015

Key questions to consider when evaluating hybrid cloud

This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.

Hybrid cloud is the talk of IT, but to avoid costly, labor-intensive megaprojects you cannot escape, pay particular attention to minimizing implementation and management complexity. These questions will help you identify the best hybrid cloud architecture for your environment:

1. What are the top ways we will use our hybrid cloud in the next 12 to 18 months?

In the midmarket, the No. 1 answer is disaster recovery (DR). A secondary data center for DR is a luxury most companies can not afford. Now, public cloud services have put DR within reach of virtually all organizations. The key is to identify the enabling technology that minimizes complexity, maximizes automation and does not overtax the IT staff. Easy cloud DR solutions exist today for midsized shops; don’t be lead into a heavy professional services project.

For larger enterprises looking to utilize hybrid cloud to optimize and free up expensive data centers, hybrid clouds are attainable, manageable options. For example, organizations using VMware might want to leverage Hyper-V because they’re running so many Microsoft applications, while others want to leverage KVM for better flexibility, network outputs and drivers. For them, alternative hypervisors give them flexibility and significant cost savings. Public clouds, on the other hand, are a place where they can grow certain applications, conduct testing and development, and run non-critical applications. However, modern transformation technologies for cross-platform management are necessary to avoid monstrous and expensive system integration efforts.

2. Which public clouds do we want to leverage?

The public cloud space is continuously morphing, and that means there are many choices. End users may be quick to ask for the clouds they recognize: Amazon or maybe Azure. You, however, need to weigh all the factors, including price, scale, support and service.

There are public cloud self-service models offering attractive price points, but may not have the support staff if users have problems. On the other end of the spectrum, there are options delivering premium-level cloud and service packages – for a substantial price premium. You need to analyze which cloud providers are best by asking the questions, “What do I get for this?” “What do I want to manage?” and “How hands-on do I want to be?” From there, consider the best possible options for management and migration. The answer will most likely be a mix of on-premise solutions, cloud solutions and services. Of course, mixing and matching can add significant management complexity if you are not careful.

3. Which on-premise platforms do we want to use?

Certain applications may require huge virtual machines (VMs), and the technical staff might find that only certain hypervisors can handle the requirements. Maybe another application needs high I/O, which will lead to a different platform choice. Cost versus performance is always a factor. No matter the particulars, you need to think about flexibility combined with ease of use and the least possible disruption. Companies want to manage their hybrid environments in the same way they manage their current environments: They want a single, comprehensive management platform. You must be able to seamlessly migrate workloads between hypervisors and maintain consistent, compliant management. It is very doable today, and thus we see the meteoric rise in hybrid deployments.

4. How will we manage the hybrid environment?
You need to consider compute, network and storage together and ensure their hybrid management construct is capable of easily spanning a range of on- and off-premise platforms and resources – at a very granular level. To be operationally efficient, you need a single point of administration and management across the hybrid resource pool – a self-service portal alone will not be sufficient for day-to-day administration operations.

The ideal would be to have a hybrid management solution that is lightweight, thorough and cost-effective. When managing a hybrid configuration, you need to base these choices on individual requirements: Are they highly regulated? Who will be accessing the information? What is the information? And so on. Regardless of the answers, the best situation is to manage the hybrid cloud and on-premise workloads from a single point. Optimally, the hybrid resources would just work seamlessly with the existing management portfolio.

5. How will this integrate with our existing operations?

Most people inherently resist change. One of the biggest challenges comes from the people inside a company, especially (and rightly so) those who are responsible for delivering a certain grade of service – like IT staff. You have to be aware of this issue, and if adopting hybrid cloud means replacing familiar management consoles, retraining personnel and changing current workflows, employees will balk. Integration with existing operations is essential to successful deployments.

In addition, the hybrid project must scale. What works for a handful of technical people will not work when large scale production IT is involved and needs a very deliberate, orchestrated solution that is seamless with existing operations. Success of the project comes down to the ability to manage it. Integration with current tools and processes is key.

6. What skills will be needed to deploy, maintain and operate our hybrid environment?
IT staffers need to be able to analyze what they have today and what is needed tomorrow in terms of cost, performance, compliance and security, and then evaluate the choices. To do this, you need a strong working knowledge of both on- and off-premise management and integration. The hybrid cloud demands a shift in thinking. With on-premise infrastructure, IT teams had to do a lot of the physical underpinnings, such as hardware installation, wiring and networking, so those skill sets were heavily valued. The cloud takes away some of that and introduces a new application of those skill sets. Now, IT teams need to adapt their players and potentially hire new staffers with expertise in hybrid cloud functionalities, management, integration and administration.

7. How will we prevent vendor lock-in?

Before you ask this question, you should look around to see whether you’re already locked in and don’t realize it. Preventing lock-in requires vigilance against technical and financial constraints that could impede the very flexibility hybrid cloud is meant to create. Think about how lock-in occurs and make the hybrid choices that prevent it. For example, if you can seamlessly and easily move hybrid workloads between disparate platforms, that reduces lock-in. If you deploy a management solution that can span platforms, that also reduces lock-in. The other type of lock-in is long-term contracts. Vendors have endless incentives to contractually lock-in customers. With the speed of IT change and options, CIOs should be particularly wary of the multi-year enterprise license agreement (ELA).

Enterprises are well along the road to hybrid IT, but many are wary of getting stuck with hybrid cloud megaprojects. The best way to avoid that fate is to focus on flexibility, while leveraging current competencies and investments every step of the way. By minimizing complexity in the implementation stage and creating a flexible management environment that’s intuitive for the operations staff, you can steer clear of unsuccessful, costly and labor-intensive hybrid cloud deployments. With today’s hybrid technologies and solutions, no megaprojects are needed.

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Thursday, February 19, 2015

70-465 Designing Database Solutions for Microsoft SQL Server 2012


QUESTION 1
You need to configure the ProcessUpdateProc stored procedure to stop running in the
event of a failure of one of the UPDATE statements.
How should you modify the ProcessUpdateProc stored procedure?

A. By configuring the SET NOCOUNT to on.
B. By configuring the SET NOEXEC option to on.
C. By configuring the XACT_ABORT option to on.
D. By configuring the XACT_ABORT option to off.

Answer: C

Explanation:


QUESTION 2
You need to design a solution to that enables the recovery of the DailyReportsTemp
database in less than one hour in the event of a storage hardware failure. Your solution
must minimize costs.
What should you recommend?

A. SQL Server Failover Clustering
B. Peer-to-peer replication
C. Differential backups
D. Log shipping
E. Database snapshots

Answer: D

Explanation:


QUESTION 3
You need to recommend a solution to meet the recovery requirements for the
Manufacturing database. Your solution must minimize costs.
What should you recommend?

A. Database snapshots
B. Transaction log backups.
C. Differential backups
D. SQL Server Failover Clustering
E. Peer-to-peer replication

Answer: A

Explanation:


QUESTION 4
You need to address the backup issues of the Sales database.
How can you reduce the time it takes to back up the Sales database?

A. By configuring table partitioning.
B. By configuring filegroups.
C. By configure the Resource Governer
D. By configuring Copy-Only backups.

Answer: B

Explanation:


QUESTION 5
You need to provide a group of users from the IT and Manufacturing departments the
minimum administrative rights to view database information and server state for the
Manufacturing database on MainDB1.
What should you do?

A. You should configure a Database Role.
B. You should configure a Server Role.
C. You should configure a Shared SQL Server Login.
D. You should configure a Local Security Group.

Answer: B

Explanation:


Sunday, February 15, 2015

70-497 Developing Microsoft SharePoint Server 2013 Advanced Solutions


QUESTION 1
You are employed as a software tester at ABC.com. ABC.com has a single Active Directory
domain, named ABC.com. ABC.com makes use of Microsoft Visual Studio 2012 for development
purposes.
You have been informed that a requirement has been removed. You are then instructed to change
the state of multiple corresponding test cases so that the removal is shown.
You are preparing to run the necessary query.
Which of the following is the application that you should run the query from?

A. Microsoft Test Manager
B. Web Access
C. Bugs Dashboard
D. Microsoft Word

Answer: B

Explanation:


QUESTION 2
You are employed as a software tester at ABC.com. ABC.com has a single Active Directory
domain, named ABC.com. ABC.com makes use of Microsoft Test Manager (MTM) for testing
purposes.
You have previously configured the use of the Microsoft Solution Framework (MSF) for Agile
Software Development process template for ABC.com’s environment. You are preparing to
execute the Bug Trends report.
Which of the following is the reason for executing this report?

A. To help track the rate at which your team is discovering and resolving bugs.
B. To list all user stories.
C. To monitor test activities and report on the team's overall test progress.
D. To determine how many test cases have been defined and are ready to run.

Answer: A

Explanation:


QUESTION 3
You are employed as a software tester at ABC.com. ABC.com has a single Active Directory
domain, named ABC.com. ABC.com makes use of Microsoft Test Manager (MTM) for testing
purposes.
You have been tasked with running tests against a Windows Presentation Foundation rich client
application. You are preparing to identify the tests that you can execute. To do this you are making
use of the Recommended tests feature.
Due to no recommended tests being presented when a new build is chosen, you determine that
the Recommended tests feature must still be activated.
Which of the following actions should you take?

A. You should consider configuring the Action Log data collector.
B. You should consider configuring the Test Impact data collector.
C. You should consider configuring the Event log data collector.
D. You should consider configuring the Trace Log data collector.

Answer: B

Explanation:


QUESTION 4
You are employed as a software tester at ABC.com. ABC.com has a single Active Directory
domain, named ABC.com. ABC.com makes use of Microsoft Test Manager (MTM) for analytical
testing purposes.
You are currently running a test that should show a copy of the display in the comment area for
the run. Your solution should require as little administrative effort as possible.
Which of the following actions should you take?

A. You should consider making use of the Add screenshot tool.
B. You should consider making use of the Paint app.
C. You should consider making use of Microsoft PowerPoint.
D. You should consider making use of Microsoft Office Picture manager.

Answer: A

Explanation:


QUESTION 5
You are employed as a software tester at ABC.com. ABC.com has a single Active Directory
domain, named ABC.com. ABC.com makes use of Microsoft Test Manager (MTM) for testing
purposes.
You are in the process of running a manual test with the option to generate an action recording
selected. You want to exit the test runner, so you have to suspend the test run.
You are required to make sure that the test case is identified as in progress prior to exiting the
runner.
Which of the following actions should you take?

A. You should consider selecting the Disabled option.
B. You should consider selecting the Return to Testing Center option.
C. You should consider selecting the Idle option.
D. You should consider selecting the Inactive option.

Answer: B

Explanation:


Thursday, February 12, 2015

600-503 Designing with Cisco Network Programmability


QUESTION 1
Which two advantages of an overlay network that consists of virtual switches on supervisors
compare with those of physical networks? (Choose two.)

A. Ability to change the logical network topology more easily.
B. Ability to experience higher performance of traffic forwarding.
C. Overlay networks integrate with virtual machines more closely
D. They can support more routing protocols.
E. They are more secure.

Answer: A,C

Explanation:


QUESTION 2
Which two options are challenges to migrate a traditional network to an SDN type of network?
(Choose two.)

A. would cost to replace traditional network devices to new devices
B. would need more operators to run a more complicated network
C. would need operators with more programming skill
D. would need more bandwidth to secure redundant paths
E. would need to remove existing network management tools

Answer: A,C

Explanation:


QUESTION 3
Which statement is an example of a requirement that is not well-formed?

A. The application should provide status messages every 60 seconds.
B. The application user interface must be easy to use.
C. The application must validate that the IP addresses that are input by users are valid IPv4 or
IPv6 addresses.
D. The application must be available for end users between 8am and 8pm EST/EDT, Monday
through Friday.
E. The application should restart within 15 seconds.

Answer: B

Explanation:


QUESTION 4
Which option is a requirement represented in an Agile software development methodology?

A. interviews
B. product functions
C. product requirements document
D. user stories
E. home stenographer

Answer: D

Explanation:


QUESTION 5
Which four components should be considered when gathering business requirements for a
customer project? (Choose four.)

A. alignment to corporate goals
B. compliance regulations
C. development team location
D. commitments to customers
E. supplier capabilities
F. business unit providing the developers

Answer: A,B,D,E

Explanation:



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Tuesday, February 10, 2015

300-135 Troubleshooting and Maintaining Cisco IP Networks (TSHOOT)


QUESTION 1
Exhibit:



A network administrator is troubleshooting an EIGRP connection between RouterA, IP address
10.1.2.1, and RouterB, IP address 10.1.2.2. Given the debug output on RouterA, which two
statements are true? (Choose two.)

A. RouterA received a hello packet with mismatched autonomous system numbers.
B. RouterA received a hello packet with mismatched hello timers.
C. RouterA received a hello packet with mismatched authentication parameters.
D. RouterA received a hello packet with mismatched metric-calculation mechanisms.
E. RouterA will form an adjacency with RouterB.
F. RouterA will not form an adjacency with RouterB.

Answer: D,F

Explanation:


QUESTION 2
When troubleshooting an EIGRP connectivity problem, you notice that two connected EIGRP
routers are not becoming EIGRP neighbors. A ping between the two routers was successful. What
is the next thing that should be checked?

A. Verify that the EIGRP hello and hold timers match exactly.
B. Verify that EIGRP broadcast packets are not being dropped between the two routers with the
show ip EIGRP peer command.
C. Verify that EIGRP broadcast packets are not being dropped between the two routers with the
show ip EIGRP traffic command.
D. Verify that EIGRP is enabled for the appropriate networks on the local and neighboring router.

Answer: D

Explanation:


QUESTION 3
Refer to the exhibit.



How would you confirm on R1 that load balancing is actually occurring on the default-network
(0.0.0.0)?

A. Use ping and the show ip route command to confirm the timers for each default network resets
to 0.
B. Load balancing does not occur over default networks; the second route will only be used for
failover.
C. Use an extended ping along with repeated show ip route commands to confirm the gateway of
last resort address toggles back and forth.
D. Use the traceroute command to an address that is not explicitly in the routing table.

Answer: D

Explanation:


QUESTION 4
Which IPsec mode will encrypt a GRE tunnel to provide multiprotocol support and reduced
overhead?

A. 3DES
B. multipoint GRE
C. tunnel
D. transport

Answer: D

Explanation:


QUESTION 5
Which three features are benefits of using GRE tunnels in conjunction with IPsec for building siteto-
site VPNs? (Choose three.)

A. allows dynamic routing over the tunnel
B. supports multi-protocol (non-IP) traffic over the tunnel
C. reduces IPsec headers overhead since tunnel mode is used
D. simplifies the ACL used in the crypto map
E. uses Virtual Tunnel Interface (VTI) to simplify the IPsec VPN configuration

Answer: A,B,D

Explanation:



Friday, February 6, 2015

220-802 CompTIA A+ Certification Exam (220-802)


QUESTION 1
A technician is creating a batch script that auto-assigns a particular drive share to a drive letter
upon login. Which of the following commands can accomplish this?

A. NET USE
B. PING
C. XCOPY
D. IPCONFIG

Answer: A
Reference: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/enus/
net_use.mspx?mfr=true


QUESTION 2
An office of 25 computers is interested in employing a file server, network shares, and print server
functionality. Which of the following network setups would be BEST suited for this situation?

A. Ad-hoc
B. Workgroup
C. Domain
D. Token ring

Answer: C
Reference: http://windows.microsoft.com/en-au/windows-vista/what-is-the-difference-between-adomain-
and-a-workgroup


QUESTION 3
Which of the following terms BEST describes the software or hardware used to manage virtual
machines?

A. Hypervisor
B. Cloud Server Manager
C. Supervisor
D. Virtual Disk Manager

Answer: A
Reference: http://www.datacenterknowledge.com/archives/2012/08/01/hypervisor-101-a-lookhypervisor-
market/


QUESTION 4
A technician is required to change a setting for HKEY_Local_Machine. Which of the following
would the technician use to change this?

A. BCEDIT
B. WEP setup
C. MSCONFIG
D. REGEDIT

Answer: D
Reference: http://www.wikihow.com/Edit-the-Windows-Registry


QUESTION 5
Which of the following Control Panel utilities will allow a technician to change the associated file
type in a Windows XP machine?

A. Folder options
B. Administrator tools
C. Accessibility options
D. Regional and language options

Answer: A
Reference: http://pcsupport.about.com/od/fixtheproblem/ht/defprogramxp.htm