In vSphere, what technology is used to perform a live migration of a VM to another host?

In vSphere, what technology is used to perform a live migration of a VM to another host?

• Replication
• VMotion
• Cloning
• Snapshots 

 

EXPLANATION

VMware VMotion enables the live migration of running virtual machines from one physical server to another with no downtime, continuous service availability, and complete transaction integrity. It is transparent to users.



 www.mosaictec.com/tessera/what-is-vmotion.htm

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Which layer of the OSI model is responsible for managing and terminating the connections between the local and remote application?

Which layer of the OSI model is responsible for managing and terminating the connections between the local and remote application?

• Application layer
• Network layer
• Data link layer
• Session layer 

EXPLANATION

The session layer controls the dialogues (connections) between computers.
It establishes, manages and terminates the connections between the local and remote application.

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In a Unix environment, what is a daemon?

In a Unix environment, what is a daemon?

• A multicore processor type for Linux OS
• A type of virus or malware
• A different user interface or desktop
• A program that runs as a background process

 

EXPLANATION

Wikipedia entry: A daemon is a computer program that runs as a background process,
rather than being under the direct control of an interactive user.

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Cloud solutions that can tolerate failures yet still provide service are referred to as what?

Cloud solutions that can tolerate failures yet still provide service are referred to as what?

• IaaS
• Highly portable
• PaaS
• Highly available 

EXPLANATION

High availability ensures that cloud solutions are always accessible.
This means eliminating single points of failure, such as storing data on a single hard disk or single network connections.

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A user can receive email but cannot send any. Which protocol, responsible for sending email, is potentially not configured properly?

A user can receive email but cannot send any. Which protocol, responsible for sending email, is potentially not configured properly?

• SNMP
• FTP
• POP3
• SMTP

EXPLANATION

The simple mail transfer protocol (SMTP) is probably not configured properly.
When troubleshooting, you need to confirm the SMTP setting because it is responsible for sending mail. POP3 receives mail, so wouldn't be responsible for the send issue, unless you are using Outlook (where POP3 authentication is required before email can be sent over SMTP). FTP sends files to remote computers and SNMP is used to manage networks.
FTP and SNMP are not responsible for users sending or receiving email.

SOURCE

http://searchexchange.techtarget.com/definition/SMTP

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