Latest Cisco CCIE 400-101 Real Exam Download 51-60

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QUESTION 51

What is the goal of Unicast Reverse Path Forwarding?

 

A.

to verify the reachability of the destination address in forwarded packets

B.

to help control network congestion

C.

to verify the reachability of the destination address in multicast packets

D.

to verify the reachability of the source address in forwarded packets

 

Answer: D

 

 

QUESTION 52

Which three features are considered part of the IPv6 first-hop security suite? (Choose three.)

 

A.

DNS guard

B.

destination guard

C.

DHCP guard

D.

ICMP guard

E.

RA guard

F.

DoS guard

 

Answer: BCE

 

 

QUESTION 53

Refer to the exhibit. Why is the router not accessible via Telnet on the GigabitEthernet0 management interface?

clip_image001

A.

The wrong port is being used in the telnet-acl access list.

B.

The subnet mask is incorrect in the telnet-acl access list.

C.

The log keyword needs to be removed from the telnet-acl access list..

D.

The access class needs to have the vrf-also keyword added.

 

Answer: D

 

 

QUESTION 54

Which three modes are valid PfR monitoring modes of operation? (Choose three.)

 

A.

route monitor mode (based on BGP route changes)

B.

RMON mode (based on RMONv1 and RMONv2 data)

C.

passive mode (based on NetFlow data)

D.

active mode (based on Cisco IP SLA probes)

E.

fast mode (based on Cisco IP SLA probes)

F.

passive mode (based on Cisco IP SLA probes)

 

Answer: CDE

 

 

QUESTION 55

Refer to the exhibit. Which statement is true?

 

clip_image003

A.

The Cisco PfR state is UP; however, the external interface Et0/1 of border router 10.1.1.1 has exceeded

the maximum available bandwidth threshold.

B.

The Cisco PfR state is UP; however, an issue is preventing the border router from establishing a TCP

session to the master controller.

C.

The Cisco PfR state is UP and is able to monitor traffic flows; however, MD5 authentication has not been

successful between the master controller and the border routers.

D.

The Cisco PfR State is UP; however, the receive capacity was not configured for inbound traffic.

E.

The Cisco PfR state is UP, and the link utilization out-of-policy threshold is set to 90 percent for traffic

exiting the external links.

 

Answer: E

 

 

QUESTION 56

In the DiffServ model, which class represents the highest priority with the highest drop probability?

 

A.

AF11

B.

AF13

C.

AF41

D.

AF43

 

Answer: D

 

 

QUESTION 57

Refer to the exhibit. Which statement about this IP SLA is true?

 

clip_image004

 

A.

The SLA must also have a schedule configured before it will start.

B.

The TTL of the SLA packets is 10.

C.

The SLA has a timeout of 3.6 seconds.

D.

The SLA has a lifetime of 5 seconds.

 

Answer: A

 

 

QUESTION 58

Refer to the exhibit. Which two are causes of output queue drops on FastEthernet0/0? (Choose two.)

 

clip_image006

A.

an oversubscribed input service policy on FastEthernet0/0

B.

a duplex mismatch on FastEthernet0/0

C.

a bad cable connected to FastEthernet0/0

D.

an oversubscribed output service policy on FastEthernet0/0

E.

The router trying to send more than 100 Mb/s out of FastEthernet0/0

 

Answer: DE

 

 

QUESTION 59

Which three actions are required when configuring NAT-PT? (Choose three.)

 

A.

Enable NAT-PT globally.

B.

Specify an IPv4-to-IPv6 translation.

C.

Specify an IPv6-to-IPv4 translation.

D.

Specify a ::/96 prefix that will map to an IPv4 address.

E.

Specify a ::/48 prefix that will map to a MAC address.

F.

Specify a ::/32 prefix that will map to an IPv6 address.

 

Answer: BCD

 

 

QUESTION 60

Which two DHCP messages are always sent as broadcast? (Choose two.)

 

A.

DHCPOFFER

B.

DHCPDECLINE

C.

DHCPRELEASE

D.

DHCPREQUEST

E.

DHCPDISCOVER

 

Answer: DE

 

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