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Cisco Designing Cisco Enterprise Networks Sample Questions (Q146-Q151):

NEW QUESTION # 146
What is the purpose of the RPF check in multicast routing?

A. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic to the destination address
B. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic back to the source address
C. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic to the destination address
D. to ensure that multicast packets, no matter the interface they arrived on, are forwarded out all interfaces
E. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic back to the source address

Answer: B

NEW QUESTION # 147
A company wants to switch from static to dynamic routing. The branches use DMVPN back to the hub using two internet connections. One internet connection speed is 10 Mbps, and the other is
100 Mbps. All locations use Cisco routers; however, the branch routers have limited memory and CPU resources. Which routing protocol and design solution must the company choose for optimal traffic forwarding during peak traffic times?

A. ISIS with the hub and spoke routers configured in two different areas
B. EIGRP with branch routers as stub routers and variance enabled
C. OSPF deployed in area 0 with branch routers connected back via virtual links
D. iBGP with the hub routers set up as route reflectors

Answer: B

NEW QUESTION # 148
Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)

A. Merge all the areas into one backbone area
B. Use Bidirectional Forwarding Detection
C. Make all non-backbone areas stub areas
D. Span the same IP network across multiple areas.
E. Tune OSPF parameters

Answer: B,E

Explanation:
Network convergence is the time that is needed for the network to respond to events.
One of the significant factors in routing convergence is the detection of link or node failure (events).
This is where BFD comes in to play.
OSPF Timers
The default OSPF LSA propagation timers are quite conservative. Lowering the values of the timers that control OSPF LSA generation can significantly improve OSPF convergence times
https://www.ciscopress.com/articles/article.asp?p=1763921&seqNum=6

NEW QUESTION # 149
An engineer is designing a QoS solution for a campus. The design must guarantee real-time traffic delivery during congestion, minimize the bandwidth consumption for possible virus or worm attacks, and reduce flooding of excessive traffic during times of congestion. Which two solutions must the engineer select?
(Choose two.)

A. Create a policing policy to drop excessive traffic and a strict queue for real-time traffic.
B. Apply queuing on the access to distribution links.
C. Create a shaping policy to drop excessive traffic and a strict queue for real-time traffic.
D. Apply queuing on the distribution to core links
E. Create a scavenger queue for excessive traffic and a strict queue for real-time traffic

Answer: A,B

NEW QUESTION # 150
Refer to the exhibit.

An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24 toward network 10.10.20.0/24. Which solution should the architect include in the design?

A. Place the link into area 2 and install a new link between R1 and R2 in area 0.
B. Configure the link to provide multiarea adjacency.
C. Lower the Administrative Distance for OSPF area 0.
D. Configure the OSPF cost of the link to a value lower than 30.

Answer: D

NEW QUESTION # 151
......

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