Computer Networking
Which three statements are true about the operation of a full-duplex Ethernet network?1. There are no collisions in full-duplex mode.2. A dedicated switch port is required for each full-duplex node.3. Ethernet hub ports are preconfigured for full-duplex mode.4. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.5. The host network card and the switch port must be capable of operating in full-duplex mode.

2 and 4
5 only
1, 2, and 5
2, 3 and 4

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Computer Networking
What is the problem with an interface if you type show interface serial 0 and receive the following message? "Serial0 is administratively down, line protocol is down."

The administrator has the interface shut down.
The administrator is pinging from the interface.
No cable is attached.
The keepalives are different times.

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Computer Networking
The main difference between synchronous and asynchronous transmission is

None of these
the pulse height is different.
the bandwidth required is different
the clocking is derived from the data in synchronous transmission
the clocking is mixed with the data in asynchronous transmission

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Computer Networking
The Internet Control Message Protocol (ICMP)

None of these
allows gateways to send error a control messages to other gateways or hosts
All of these
provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem

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Computer Networking
Ethernet and Token-Ring are the two most commonly used network architectures in the world. Jim has heard of the different topologies for networks and wants to choose the architecture that will provide him with the most options. Which of the following would that be? Choose the most correct answer.

Neither Token-Ring nor Ethernet is the proper choice. Only ARCnet can be used in all topologies
Token-Ring, because it uses a MAU
Ethernet, because it is cabled using fiber-optic cable
Ethernet, because it can be set up with most topologies and can use multiple transfer speeds
Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology

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