What's a network segment for public-facing servers that's separated from a private, trusted network by a firewall?

What's a network segment for public-facing servers that's separated from a private, trusted network by a firewall?

• DMZ
• NSA
• VPN
• ATA 

EXPLANATION

A DMZ, or demilitarized zone, is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a larger and untrusted network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's local area network (LAN).

SOURCE

http://www.ciscopress.com/articles/article.asp?p=1823359

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To avoid data corruption, which of the following should you do before performing fsck on a file system?

To avoid data corruption, which of the following should you do before performing fsck on a file system?

• Reboot the machine
• Create a new data partition
• Unmount the file system
• Ensure the file system is mounted 

 

EXPLANATION

The fsck command is used to check and repair one or more Linux file systems. Running fsck on a mounted file system can cause data or disk corruption. Instead, you can do one of the following:
(a) Take down system to single user mode and unmount the system
(b) Boot from the installation CD

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On systems running MS Windows, which OS service manages the print queue?

On systems running MS Windows, which OS service manages the print queue?

• Spooler
• LPD
• RAW daemon
• Print manager 

 

EXPLANATION

The spooler service manages print jobs on Windows OS PCs.  Sometimes this service can get "stuck" and otherwise interrupt printing.  A quick and effective troubleshooting idea is to simply stop and restart the service.  This is done through an elevated command prompt:

net stop spooler

Then restart using the following:
net start spooler

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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
• Set-MailboxPermission -Identity User1@contoso.com:\Calendar -User User2 -AccessRights Owner
• Add-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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In Windows, If you close a tab in Firefox/Chrome/IE, what key command will re-open it for you?

In Windows, If you close a tab in Firefox/Chrome/IE, what key command will re-open it for you?

• Ctrl-Shift-T
• Ctrl-T-O
• Ctrl-Alt-T
• Ctrl-Alt-O-T 

 

EXPLANATION

When you realize you just closed that browser tab that you have kept open for the last 4 days... just in case. You can easily now just  type "Ctl - Shift - T" to get it back.

SOURCE

http://www.slate.com/blogs/future_tense/2013/08/22/keyboard_shortcut_helps_recover_lost_browser_tabs.html

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