Latest Cisco CCIE 400-101 Real Exam Download 81-90

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QUESTION 121

Refer to the exhibit. Which three statements about the output are true? (Choose three.)

 

clip_image002

 

A.

This switch is currently receiving a multicast data stream that is being forwarded out VLAN 150.

B.

A multicast receiver has requested to join one or more of the multicast groups.

C.

Group 224.0.1.40 is a reserved address, and it should not be used for multicast user data transfer.

D.

One or more multicast groups are operating in PIM dense mode.

E.

One or more of the multicast data streams will be forwarded out to neighbor 10.85.20.20.

F.

Group 239.192.1.1 is a reserved address, and it should not be used for multicast user data transfer.

 

Answer: ABC

 

 

QUESTION 122

Which statement about the RPF interface in a BIDIR-PIM network is true?

 

A.

In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the PIM

rendezvous point.

B.

In a BIDIR-PIM network, the RPF interface can be the interface that is used to reach the PIM rendezvous

point or the interface that is used to reach the source.

C.

In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the source.

D.

There is no RPF interface concept in BIDIR-PIM networks.

 

Answer: A

 

 

QUESTION 123

Which technology is an application of MSDP, and provides load balancing and redundancy between the RPs?

 

A.

static RP

B.

PIM BSR

C.

auto RP

D.

anycast RP

 

Answer: D

 

 

QUESTION 124

Which two statements are true about IPv6 multicast? (Choose two.)

 

A.

Receivers interested in IPv6 multicast traffic use IGMPv6 to signal their interest in the IPv6 multicast group.

B.

The PIM router with the lowest IPv6 address becomes the DR for the LAN.

C.

An IPv6 multicast address is an IPv6 address that has a prefix of FF00::/8.

D.

The IPv6 all-routers multicast group is FF02:0:0:0:0:0:0:2.

 

Answer: CD

 

 

QUESTION 125

Refer to the exhibit. While configuring AAA with a local database, users can log in via Telnet, but receive the message “error in authentication” when they try to go into enable mode. Which action can solve this problem?

clip_image003

A.

Configure authorization to allow the enable command.

B.

Use aaa authentication login default enable to allow authentication when using the enable command.

C.

Verify whether an enable password has been configured.

D.

Use aaa authentication enable default enable to allow authentication when using the enable command.

 

Answer: C

 

 

QUESTION 126

Which attribute is not part of the BGP extended community when a PE creates a VPN-IPv4 route while running OSPF between PE-CE?

 

A.

OSPF domain identifier

B.

OSPF route type

C.

OSPF router ID

D.

MED

E.

OSPF network type

 

Answer: E

 

 

QUESTION 127

Which three factors does Cisco PfR use to calculate the best exit path? (Choose three.)

 

A.

quality of service

B.

packet size

C.

delay

D.

loss

E.

reachability

F.

administrative distance

 

Answer: CDE

 

 

QUESTION 128

What is a reason to use DHCPv6 on a network that uses SLAAC?

 

A.

to get a record of the IPs that are used by the clients

B.

to push DNS and other information to the clients

C.

no reason, because there is no need for DHCPv6 when using SLAAC

D.

because DHCPv6 can be used only in stateful mode with SLAAC to record the IPs of the clients

E.

because DHCPv6 can be used only in stateless mode with SLAAC to record the IPs of the clients

F.

because DHCPv6 is required to use first-hop security features on the switches

 

Answer: B

 

 

QUESTION 129

Which statement is true about Fast Link Pulses in Ethernet?

 

A.

They are used during collision detection.

B.

They are used only if the media type is optical.

C.

They are part of UniDirectional Link Detection.

D.

They are used during autonegotiation.

 

Answer: D

 

 

QUESTION 130

Which statement is true regarding UDLD and STP timers?

 

A.

The UDLD message timer should be two times the STP forward delay to prevent loops.

B.

UDLD and STP are unrelated features, and there is no relation between the timers.

C.

The timers need to be synced by using the spanning-tree udld-sync command.

D.

The timers should be set in such a way that UDLD is detected before the STP forward delay expires.

 

Answer: D

 

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