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682 Appendix A: Answers to Review Questions
13
How many bits are in the IP header's Type of Service field?
8.
14
How many bits make up the IP Precedence portion of the Type of Service field?
3.
15
What is the only command that is absolutely necessary on a router if it is to participate in
DLSw+ in listening mode?
dlsw local-peer peer-id x.x.x.x promiscuous.
16
NetBIOS is transported in what type of frame?
NetBIOS is transported in an LLC2 frame.
17
If the priority command is specified on the DLSw+ command and nothing else, what TCP
port will the traffic use?
The normal port, or 1982.
18
What would be a good routing choice if you needed to specify a path that traffic should
take?
Policy routing.
19
What does Weighted Fair Queuing favor?
Low-volume conversations.
20
What does DLSw+ encapsulate?
SNA and NetBIOS traffic.
21
What router platforms are a good choice for a very large DLSw+ network?
The 7500, 7200, and possibly the 3600.
22
What is an example of differentiated service?
Custom and priority queuing.
23
What is an example of guaranteed service?
Resource Reservation Protocol (RSVP).
24
On what TCP port do circuit establishment, keepalives, and capability exchanges occur
on?
TCP port 2065.
25
What is Class-Based Weighted Fair Queuing?
CBWFQ is when WFQ uses the IP Precedence bits to classify which conversation flows
get more priority.
87200333.book Page 682 Wednesday, August 22, 2001 1:41 PM