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Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 324-325.
Q. 99
Which statement about Ethernet networks is true?
A. The advantage of a full duplex is the ability to transmit data over Mbase2 cable.
B. Full duplex Ethernet requires a point-to-point connection when only two nodes are present.
C. Ethernet switches can use full duplex mode to connect multiple nodes to a single port of a switch.
D. Half duplex is a cut through packet processing method that is very fast with little error correction,
full duplex is store and forward method that is slower but has better error correction.
Answer: B
Explanation: Full duplex always requires there to be a point to point connection.
Incorrect Answers:
A is incorrect; full duplex is done over CAT 5 cable.
C is incorrect; full duplex can only be done if one node is attached to a particular port.
D is incorrect; Half/Full duplex is independent of cut-through and/or store and forward.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) page 165.
Q. 100
On a network design project you determine that a new testing application requires multiple hosts. These
hosts must be capable of sharing data between each host and an enterprise server at 10 Mbps bandwidth.
Other divisions in the company use applications that require less than 2 Mbps bandwidth of the
enterprise serve.
What is your economical recommendation?
A. That the existing 10BaseT hub be replaced with 100BaseT hub to improve overall performance.
B. That a router can separate the testing application from the rest of the network thus allowing the
testing application more bandwidth.
C. That the switch be installed so that enterprise server can be provided a 100 Mbps port and each
of the testing application hosts can be given dedicated 10 Mbps ports.
D. That a bridge be placed between the enterprise server and all other users with the exception of
the testing application.
Answer: C
Explanation: With buffering in the switch, the enterprise server can serve multiple hosts at almost full capacity,
since the 100Mbps port will be faster than the rest of the users totaled as a whole.