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CCIE Routing and Switching Written Exam v5.1

QUESTION 801

Which technology facilitates dynamic tunnel establishment in DMVPN?

 

A.

CEF

B.

mGRE

C.

a dynamic routing protocol

D.

NHRP

 

Correct Answer: D

 

 

QUESTION 802< /b>

Which two statements about SNMP are true? (Choose two.)

 

A.

SNMPv3 provides privacy and access control.

B.

All SNMP versions use get, getNext, and getBulk operations.

C.

SNMPv3 uses encrypted community strings.

D.

SNMPv1 and SNMPv2c use plaintext community strings.

E.

All SNMP versions support bulk retrieval and detailed error messages.

 

Correct Answer: AB

 

 

 

QUESTION 803

Which two statements about route summarization are true? (Choose two.)

 

A.

RIP, IGRP, and EIGRP can automatically summarize routing information at network address boundaries.

B.

EIGRP can automatically summarize external routes.

C.

The area range command can aggregate addresses on the ASBR.

D.

The summary-address command under the router process configures manual summarization on RIPv2 devices.

E.

The ip classless command enables classful protocols to select a default route to an unknown subnet on a network with other known subnets.

 

Correct Answer: AE

 

 

QUESTION 804

Which two message types allow PIM snooping to forward multicast traffic? (Choose two.)

 

A.

hello messages

B.

leave messages

C.

membership query messages

D.

bidirectional PIM DF election messages

 

Correct Answer: AD

 

 

QUESTION 805

Which feature of Cisco IOS XE Software allows for platform-independent code abstraction?

 

A.

its security

B.

Common Management Enabling Technology

C.

the Linux-based environment

D.

its modularity

 

Correct Answer: D

 

 

QUESTION 806

Which statement about the VLAN database is true?

 

A.

Manually deleting the vlan.dat file can cause inconsistency in the database.

B.

Private VLAN information is stored in the database.

C.

VLAN configurations 1 through 4096 are stored in the vlan.dat file.

D.

The VLAN database is used only if the VTP domain name in the VLAN database matches the VTP domain name in the startup-config file.

 

Correct Answer: A

 

 

 

 

 

 

QUESTION 807

In an STP domain, which two statements are true for a nonroot switch, when it receives a configuration BPDU from the root bridge with the TC bit set? (Choose two.)

 

A.

It sets the MAC table aging time to max_age time.

B.

It sets the MAC table aging time to forward_delay time.

C.

It recalculates the STP topology upon receiving topology change notification from the root switch.

D.

It does not recalculate the STP topology upon receiving topology change notification from the root switch.

 

Correct Answer: BD

 

 

QUESTION 808

Which two statements about OSPF default route injection are true? (Choose two.)

 

A.

The ABR requires manual configuration to send a default route into an NSSA area.

B.

The ABR injects a default route into a Totally Stub Area.

C.

In a stub area, the ASBR generates a summary LSA with link-state ID 0.0.0.0.

D.

If the default route is missing from the routing table, the ASBR can use the default-information originate command to advertise the default into the OSPF domain.

E.

By default, OSPF normal areas will generate default routes into the routing domain if a default route exists.

 

Correct Answer: AB

 

 

QUESTION 809

Refer to the exhibit. While reviewing a log file on a router with this NTP configuration, you note that the log entries of the router display a different time than the NTP time. Which action can you take to correct the problem?

 

clip_image001

 

A.

Add the localtime keyword to the service timestamps log datetime statement.

B.

Add the msec keyword to the service timestamps log datetime statement.

C.

Add the statement ntp broadcast to the NTP configuration of the neighboring router.

D.

Configure the router to be the NTP master.

E.

Remove the datetime keyword from the service timestamps log datetime statement.

 

Correct Answer: A

 

 

 

 

QUESTION 810

What are the three variants of NTPv4? (Choose three.)

 

A.

client/server

B.

broadcast

C.

symmetric

D.

multicast

E.

asymmetric

F.

unicast

 

Correct Answer: ABC

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