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?

• Highly available
• Highly portable
• PaaS
• IaaS 

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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What MySQL feature allows for queries to be run periodically in the background, independent of a front-end program?

What MySQL feature allows for queries to be run periodically in the background, independent of a front-end program?

• MySQL Automatic Events
• MySQL Task Manager
• MySQL Event Scheduler
• MySQL Scheduled Tasks 

 

EXPLANATION

The MySQL Event Scheduler allows for queries to be run in the background at scheduled times, either as a one-off or recurring event.

SOURCE

https://dev.mysql.com/doc/refman/5.7/en/events-overview.html

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On a Cisco Catalyst switch, what are the Layer 3 interfaces called that are used to accomplish inter-VLAN routing?

On a Cisco Catalyst switch, what are the Layer 3 interfaces called that are used to accomplish inter-VLAN routing?

• SVI
• SIP
• Trunk interfaces
• RIP 

  EXPLANATION

VLANs divide broadcast domains in a LAN environment. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. This is known as inter-VLAN routing. On Catalyst switches it is accomplished by creating Layer 3 interfaces known as Switch Virtual Interfaces (SVI).
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By default, which of the following is NOT a legitimate Linux run level?

By default, which of the following is NOT a legitimate Linux run level?

• 4: Normal mode
• 6: Reboot system
• 1: Single-user mode
• 3: Multi-user mode with networking 

EXPLANATION

A Linux run level defines the state of the system after boot. Conventionally, seven run levels exist, numbered from zero to six. They include:
0: Halt system
1: Single-user mode
2: Basic multi-user mode without NFS
3: Multi-user mode with networking
4: Unused
5: Multi-user mode with GUI

6: Reboot system

SOURCE

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What is not true about HSRP?

What is not true about HSRP?

• Preempt is set by default
• It is described in RFC 2281
• Can track an interface for failover
• Cisco proprietary protocol 

 EXPLANATION

Hot Standby Router Protocol (HSRP) is a Cisco proprietary routing protocol that allows host computers on the Internet to use multiple routers that act as a single virtual router, maintaining connectivity even if the first hop router fails, because other routers are on "hot standby" - ready to go. HSRP's preempt has to be manually set with the "standby vlan-number preempt" command in the Vlan interface configuration mode.

SOURCE

http://www.cisco.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/9234-hsrpguidetoc.html

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Which of the following Powershell commands would give User2 access to User1's calendar? User2 does not currently have access to anything of User1's

Which of the following Powershell commands would give User2 access to User1's calendar? User2 does not currently have access to anything of User1's

• Add-MailboxFolderPermission -Identity User1@contoso.com:\Calendar -User User2 -AccessRights Owner
• Set-MailboxFolderPermission -Identity User1@contoso.com:\Calendar -User User2 -AccessRights Owner
• Add-MailboxPermission -Identity User1@contoso.com:\Calendar -User User2 -AccessRights Owner
• Set-MailboxPermission -Identity User1@contoso.com:\Calendar -User User2 -AccessRights Owner 

EXPLANATION

There are two things to notice.  First is that you're trying to give new permissions to User2 and not change current permissions of User2 within User1's mailbox.  So we'll want to use Add instead of Set.  Set is used to change permissions if a user already has some sort of permissions within the mailbox.

The second thing is that the calendar is a folder within the mailbox.  We don't want User2 to be able to read User1's emails, so we'll do Add-MailboxFolderPermission instead of Add-MailboxPermission.

SOURCE

https://technet.microsoft.com/en-us/library/dd298062(v=exchg.160).aspx

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Which of these is not a valid option when right clicking a powered on (running) virtual machine in vCenter?

Which of these is not a valid option when right clicking a powered on (running) virtual machine in vCenter?

• Migrate
• Rename
• Clone
• Remove from Inventory 

EXPLANATION

You cannot remove a powered on virtual machine from the vCenter inventory.  The VM has to be shut down first.

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