Computer Networking
You are troubleshooting a connectivity problem in your corporate network and want to isolate the problem. You suspect that a router on the route to an unreachable network is at fault. What IOS user exec command should you issue?

Router> ping
Router> show interface
Router> show ip route
Router> trace

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Computer Networking
HDLC (High-level Data Link Control) is

a method of determining which device has access to the transmission medium at any time
None of these
a method access control technique for multiple-access transmission media
network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued by ISO.

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Computer Networking
The main difference between TCP and UDP is

None of these
All of these
TCP is an Internet protocol where as UDP is an ATM protocol
UDP is a datagram where as TCP is a connection oriented service
UDP is connection oriented where as TCP is datagram service

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