Computer Networking
Which of the following conditions is used to transmit two packets over a medium at the same time?

Synchronous
None of these
Contention
Asynchronous
Collision

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Computer Networking
The data-link layer, in reference to the OSI model, specifies

the interface between the X.25 network and packet mode device
All of these
None of these
data link procedures that provide for the exchange of data via frames that can be sent and received
the virtual circuit interface to packet-switched service

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Computer Networking
You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?

Debug output is sent only to the console.
IP addressing on the network is incorrect.
You must use the terminal monitor command.
You must type the show ip rip command first.

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Computer Networking
You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

The routing tables on the switches will not update.
Broadcast storms will occur on the switched network.
The switches will automatically load-balance between the two links.
The MAC forward/filter table will not update on the switch.

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Computer Networking
If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

The lowest IP address of any logical interface
The highest IP address of any physical interface
The lowest IP address of any physical interface
The highest IP address of any logical interface

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