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Registration date : 2007-02-22

PostSubject: module 9   Fri Nov 30, 2007 5:42 pm

CCNP 2
Chapter 9

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Which queuing method is used inside each class in class-based weighted fair queuing (CBWFQ)?

FIFO X
PQ
CQ
WFQ
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During periods of congestion, what process does a router use to schedule packets for transmission?

queuing X
buffering
switching
compression
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Which Cisco queuing method provides strict priority queuing for Class-Based Weighted Fair Queuing?

LLQ X
PQ
WFQ
CQ
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For which type of problem is traffic prioritization most effective?

constant congestion
temporary congestion X
high level of downtime
bursty traffic and high data rates
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Which term describes a variation in network delay?

latency
jitter X
tail-drop
jabber
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With only default queuing enabled on an T1/E1 or slower interface, which command enables FIFO on that interface?

(config-if)#enable fifo
(config-if)#fair-queue fifo
(config-if)#no fair-queue X
(config-if)#fair-queue enable fifo
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When an individual conversation queue contains more messages than the congestive-discard threshold and the queuing for that conversation stops, what must happen before any new messages are queued?

The content of the queue must drop below one-third of the congestive-discard threshold value.
The content of the queue must drop below one-fourth of the congestive-discard threshold value. X
The content of the queue must drop below one-fifth of the congestive-discard threshold value.
The content of the queue must drop below one-tenth of the congestive-discard threshold value.
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Which compression method is used by Cisco's HDLC to ensure error correction and packet sequencing?

payload compression
STAC compression X
TCP header compression
per-virtual-circuit compression
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Which command displays queuing information for the router interfaces?

show interface-queue
show custom-queuing
show interfaces X
show custom-queue-list
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A queuing policy helps the network manager meet which two major challenges? (Choose two.)

controls bursty LAN traffic
provides an appropriate level of service for all users X
improves network security
controls expensive WAN costs X
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Which compression method involves compressing only the data portion of the data stream?

link compression
TCP header compression
payload compression X
per-interface compression
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In order to give priority to delay-sensitive traffic, such as voice, what is the preferred queuing method on links that are 1.5 Mbps or slower?

CBWFQ
WFQ
LLQ X
FIFO
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Which queuing method places no priority on traffic types?

CQ
FIFO X
WFQ
PQ
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Which of the listed Cisco queuing methods has the fewest configuration tasks associated with it?

CQ
WFQ X
PQ
CBWFQ
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Weighted Random Early Detect (WRED) attempts to fix which issue?

TCP windows sizes
global synchronization X
latency
packet loss
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By default, which form of data compression is used when data is transmitted across a serial link?

link compression
payload compression
TCP header compression
no compression X
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
What is the most effective solution to the problem of a constantly congested WAN link?

CQ
WFQ
additional bandwidth X
PQ
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which compression method involves compressing both header and payload?

link compression X
payload compression
TCP header compression
per-virtual-circuit compression
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which two statements are included as common goals for establishing a queuing policy? (Choose two.)

establish a fair bandwidth distribution policy across the various types of network traffic X
grant strict priority large packets, possibly at the expense of less critical network traffic
customize bandwidth allocation so that network resources are shared equally among all of the applications
analyze and distinguish the types of traffic using an interface to effectively configure a queuing policy X
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