Cisco
Exam Name: Designing Cisco Network Service Architectures
642-874 PDF
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Question:
1
|
Refer to the exhibit.
Which recommended practice
is applicable?
A. If no core layer is
deployed, the design will be easier to scale.
B. A dedicated campus core
layer should be deployed for connecting three or more buildings.
C. If no core layer is
deployed, the distribution switches should not be fully meshed.
D. A dedicated campus core
layer is not needed for connecting fewer than five buildings.
Answer: B
|
Question:
2
|
When a router has to make
a rate transition from LAN to WAN, what type of congestion needs should be
considered in the network design?
A. RX-queue deferred
B. TX-queue deferred
C. RX-queue saturation
D. TX-queue saturation
E. RX-queue starvation
F. TX-queue starvation
Answer: F
|
Question:
3
|
To which switch or
switches should you provide redundant links in order to achieve high
availability with reliable fast convergence in the enterprise campus?
A. to a core switch
running Cisco NSF and SSO from redundant distribution switches connected with a
Layer 2 link
B. to a core switch
running Cisco NSF and SSO from redundant distribution switches connected with a
Layer 3 link
C. to two core switches
from redundant distribution switches connected with a Layer 2 link D. to two
core switches from redundant distribution switches connected with a Layer 3
link
E. to two core switches
running Cisco NSF and SSO from two redundant distribution switches running
Cisco NSF and SSO
Answer: D
|
Question:
4
|
Which of these statements
is correct regarding Stateful Switchover and Cisco Nonstop Forwarding?
A. Utilizing Cisco NSF in
Layer 2 environments can reduce outages to one to three seconds.
B. Utilizing SSO in Layer
3 environments can reduce outages to one to three seconds.
C. Distribution switches
are single points of failure causing outages for the end devices.
D. Utilizing Cisco NSF and
SSO in a Layer 2 environment can reduce outages to less than one second.
E. NSF and SSO with
redundant supervisors have the most impact on outages at the access layer.
Answer: E
|
Question:
5
|
When is a first-hop
redundancy protocol needed in the distribution layer?
A. when the design
implements Layer 2 between the access and distribution blocks
B. when multiple vendor
devices need to be supported
C. when preempt tuning of
the default gateway is needed
D. when a robust method of
backing up the default gateway is needed
E. when the design
implements Layer 2 between the access switch and the distribution blocks
Answer: A
|
Question:
6
|
Which of these is a
recommended practice with trunks?
A. use ISL encapsulation
B. use 802.1q
encapsulation
C. set ISL to desirable
and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to
support dynamic propagation of VLAN information across the network
Answer: B
|
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