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Computer Networking

Computer Networking
How often are BPDUs sent from a layer 2 device?

Never
Every 30 seconds
Every 2 seconds
Every 10 minutes

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Computer Networking
The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.

Hybrid hub
Open Systems
Internetwork processor
Protocol
TCP/IP

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Computer Networking
If you want to have more than one Telnet session open at the same time, what keystroke combination would you use?

Ctrl+Shift+X, then 6
Ctrl+Shift+6, then X
Ctrl+X, then 6
Tab+Spacebar

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Computer Networking
A network administrator wants to upgrade the IOS of a router without removing the image currently installed. What command will display the amount of memory consumed by the current IOS image and indicate whether there is enough room available to hold both the current and new images?

show memory
show version
show buffers
show flash

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Computer Networking
When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system?

Identification procedure
None of these
Log-on procedure
Security procedure
Safeguard procedure

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Computer Networking
Which of the following is a wrong example of network layer?

Internet Protocol (IP) - ARPANET
X.25 level 2-ISO
Source routing and domain naming-USENet
X.25 Packet Level Protocol (PLP)-ISO

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