In Cisco IOS, how do you enter into Privileged EXEC mode?

In Cisco IOS, how do you enter into Privileged EXEC mode?

• Login
• Enable
• Su
• Exec 

EXPLANATION

Privileged EXEC mode is password protected, and allows the use of all EXEC mode commands available on the system. To enter privileged EXEC mode from user EXEC mode, use the enable command. Privileged EXEC mode allows access to global configuration mode through the use of the enable command. The privileged EXEC mode prompt consists of the devices's host name followed by the pound sign: Router# .
http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf019.html

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In Unix what program notifies the user of a new mail notification by sending an alert to the tty?

In Unix what program notifies the user of a new mail notification by sending an alert to the tty?

• biff
• squib
• gnub
• ding 

 

EXPLANATION

When a new mail message is delivered, the program biff alerts the recipient so they can read it immediately. The alert is sent to the tty where the recipient is logged in, and contains the Subject, From line, and first few lines of the body of the new message. The alert also includes terminal beeps to guarantee quick attention.
Notification is enabled by the command
biff yand disabled by
biff n
https://en.wikipedia.org/wiki/Biff

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What is the smallest data unit in quantum computing?

What is the smallest data unit in quantum computing?

• 1 Cubik
• 1 Cubit
• 1 Qubit
• 1 Quanbit 

 

EXPLANATION

A qubit is a quantum bit , the counterpart in quantum computing to the binary digit orbit of classical computing. Just as a bit is the basic unit of information in a classical computer, a qubit is the basic unit of information in a quantum computer
In a quantum computer, a number of elemental particles such as electrons or photons can be used, with either their charge or polarization acting as a representation of 0 and 1. In a classical system, a bit would have to be in one state or the other. However, quantum mechanics allows the qubit to be in a superposition of both states at the same time, a property which is fundamental to quantum computing.
See wikipedia entry for more information:
https://en.wikipedia.org/wiki/Qubit

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If you want to create a new login on SQL Server, what is the proper syntax?

If you want to create a new login on SQL Server, what is the proper syntax?

• CREATE LOGIN login_id WITH PASSWORD = password
• CREATE LOGIN login_id WITH USE = password
• CREATE LOGIN login_id USE = password
• USE LOGIN login_id WITH PASSWORD = password 

 

EXPLANATION

Somebody on the Microsoft team decided that this syntax – create a login with this password – made sense. Even if it's arbitrary, you can't say it isn't intuitive.
https://msdn.microsoft.com/en-us/library/ms189751.aspx

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Which of the following would NOT be an ideal route information sharing method in a mixed-brand networked environment?

Which of the following would NOT be an ideal route information sharing method in a mixed-brand networked environment?

• Static
• EIGRP
• RIP
• OSPF 

EXPLANATION

EIGRP is a Cisco proprietary protocol that often isn't supported by all other hardware vendors.
OSPF would be the best alternative if using mixed-brand equipment since it is universally well supported.

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