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Answer: C
Explanation: Connectionless protocols have many advantages. One of the main advantages is that there is a
reduction in overhead traffic, as acknowledgments are not sent. This does, though, increase the likeyhood of a
lost packet.
Incorrect Answers:
A is incorrect; there is no packet acknowledgement in UDP.
B is incorrect; this is the opposite, UDP does not guarantee against packet loss.
D is incorrect; UDP does not expect packet ordering.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 29-30.
Q. 117
Which statement is true when a broadcast is sent in an Ethernet/802.3 LAN?
A. The IP subnet used is 255.255.255.0
B. The IP address used is 255.255.255.255
C. The MAC address used is 00-00-00-00-00-00
D. The MAC address used is FF-FF-FF-FF-FF-FF.
Answer: D
Explanation: The MAC address for a broadcast is FF-FF-FF-FF-FF-FF.
Incorrect Answers:
A and B are incorrect; these are IP addresses and 802.3 uses MAC addresses.
C is incorrect; this is the address used for a multicast.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 149-152.
Q. 118
What are two components of an IPX address?
A. Network number; IP address.
B. MAC address; node number.
C. Network number; MAC address.
D. Network number; subnet number.
Answer: C
Explanation:
An IPX address is composed of two parts: the network number and the node number. For IPX the node number
is usually obtain from MAC address of the network interface.