300-420 Real Exam Dumps Questions and answers 11-20
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Question No.11
Which feature is required for graceful restart to recover from a processor failure?
|
A. |
Cisco Express Forwarding |
|
B. |
Virtual Switch System |
|
C. |
Stateful Switchover |
|
D. |
Bidirectional Forwarding Detection |
Correct Answer: A
Question No.12
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)
|
A. |
IGMPv2 |
|
B. |
BIDIR-PIM |
|
C. |
MP-BGP |
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D. |
MSDP |
|
E. |
MLD |
Correct Answer: CD
Question No.13
What is a benefit of using VRRPv3 as compared to VRRPv2?
|
A. |
VRRPv3 supports IPv4 and IPv6 |
|
B. |
VRRPv3 supports authentication |
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C. |
VRRPv3 supports preemption |
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D. |
VRRPv3 supports stateful switchover |
Correct Answer: A
Question No.14
An engineer must design a multicast network for a financial application. Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?
|
A. |
PIM-SSM |
|
B. |
PIM-SM |
|
C. |
MSDP |
|
D. |
BIDIR-PIM |
Correct Answer: B
Question No.15
Which feature must be incorporated into the campus LAN design to enable Wake on LAN?
|
A. |
dynamic ARP Inspection Snooping on layer 2 devices |
|
B. |
directed broadcasts on layer 3 devices |
|
C. |
proxy ARP on layer 3 devices |
|
D. |
DHCP Snooping on layer 2 devices |
Correct Answer: B
Question No.16
Which design consideration must be made when dual vEdge routers are deployed at a branch site?
|
A. |
Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch. |
|
B. |
HSRP priorities must match the OMP routing policy to prefer one vEdge over the other. |
|
C. |
Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly. |
|
D. |
Configure BFD between vEdge routers to detect sub-second link failures. |
Correct Answer: A
Question No.17
How do endpoints inside an SD-Access network reach resources outside the fabric?
|
A. |
a VRF fusion router is used to map resources in one VN to another VN |
|
B. |
Fabric borders use VRFs to map VNs to VRFs |
|
C. |
SD-Access transit links are used to transport encapsulated traffic from one fabric to another |
|
D. |
A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network |
Correct Answer: D
Question No.18
Which design consideration must be made when using IPv6 overlay tunnels?
|
A. |
Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture. |
|
B. |
Overlay tunnels should only be considered as a transition technique toward a permanent solution. |
|
C. |
Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack. |
|
D. |
Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure. |
Correct Answer: C
Question No.19
An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)
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A. |
support for AES 256-bit encryption |
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B. |
greater scalability |
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C. |
support for anycast gateway |
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D. |
lower traffic overhead |
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E. |
dynamic spoke-to-spoke tunnels |
Correct Answer: BE
Question No.20
An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?
|
A. |
shaping |
|
B. |
WRED |
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C. |
policing |
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D. |
RED |
Correct Answer: A
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