Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

Network Monitoring 153
last name and first initial not to exceed eight characters. Detailed steps with
procedures help execute policies.
Incorrect answers and explanations: A, B, and C. Answer A is incorrect
because this term does not exist in network management. Answer B is
incorrect because CM documentation is the overall term used to describe
writing schematics, developing physical and logical network diagrams,
establishing baselines, creating policy, procedures, and configurations, and
using regulations. Answer C is correct because this document lays out each
step needed to accomplish a task.
3. Correct answer and explanation: A. Answer A is correct because this is a
common term used to describe the control of computer network traffic to
optimize for peak performance, also known as packet shaping. Increasing
usable bandwidth and lowering latency are the goals of traffic shaping. This
technique is used by specifying what traffic, at what rate (rate limiting) in
a span of time (bandwidth throttling) you are going to allow in or out of
your network.
Incorrect answers and explanations: B, C, and D. Answer B is incorrect
because this is a technique used on computer networks to distribute the
incoming traffic upon other network devices if there are indications of
increased network traffic or “load.” Answer C is incorrect because high
availability is a system design protocol, which once implemented assures
a specific degree of uptime continuity in a specific period of time. The
goal of high availability is to ensure users have the maximum uptime
so they can access network resources anytime and anywhere. Answer D
is incorrect because jitter is the variation in packet delay when there are
delays in transit.
4. Correct answer and explanation: A. Answer A is correct because QoS is
a measure of value of a network service (that is, VoIP) compared with
the expected or the predicted performance quality that network service
is actually producing on your network. By enabling QoS for VoIP, you
can ensure that voice echoing in the background or other delays are not
occurring.
Incorrect answers and explanations: B, C, and D. Dropped, delay, and jitter
are incorrect because each of these problems occurs if QoS is not used.
Answer B is incorrect because the routers might fail to deliver (drop) some
packets if they arrive when their buffers are already full. Some, none, or all
of the packets might be dropped, depending on the state of the network,
and it is impossible to determine what will happen in advance. The receiving
application may ask for this information to be retransmitted, possibly
causing severe delays in the overall transmission. Answer C is incorrect
because VoIP is a real-time application of voice services, any delay would
reduce the transmission thereby making it impossible to understand the
other person on the distant end. Overcrowded data links on routers in
the transit path of your packets could result in a delay of data packets.