Ensurepass

CCIE Routing and Switching Written Exam v5.1

 

QUESTION 641

DRAG DROP

Drag and drop each DHCP term on the left to the corresponding definition on the right.

 

clip_image001

 

Correct Answer:

clip_image002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 642

DRAG DROP

Drag and drop the EIGRP term on the left to the corresponding definition on the right.

 

clip_image003

 

Correct Answer:

clip_image004

 

 

QUESTION 643

Which statement is true about conditional advertisements?

 

A.

Conditional advertisements create routes when a predefined condition is met.

B.

Conditional advertisements create routes when a predefined condition is not met.

C.

Conditional advertisements delete routes when a predefined condition is met.

D.

Conditional advertisements create routes and withhold them until a predefined condition is met.

E.

Conditional advertisements do not create routes, they only withhold them until a predefined condition is met.

 

Correct Answer: E

Explanation:

The Border Gateway Protocol (BGP) conditional advertisement feature provides additional control of route advertisement, depending on the existence of other prefixes in the BGP table. Normally, routes are propagated regardless of the existence of a different path. The BGP conditional advertisement feature uses the non-exist-map and the advertise-map keywords of the neighbor advertise-map command in order to track routes by the route prefix. If a route prefix is not present in output of the non-exist-map command, then the route specified by the advertise-map command is announced. This feature is useful for multihomed networks, in which some prefixes are advertised to one of the providers only if information from the other provider is not present (this indicates a failure in the peering session or partial reachability).

Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/16137-cond-adv.html

 

 

QUESTION 644

Refer to the exhibit. Which prefixes will appear in the EIGRP topology table?

 

clip_image006

 

A.

10.0.0.0/8, 172.16.1.0/24, 192.168.0.0/16

B.

10.1.1.0/24, 10.1.2.0/24, 172.16.1.0/26, 192.168.1.0/26, 192.168.2.0/26

C.

10.1.1.0/24, 10.1.2.0/24, 172.16.1.0/26, 172.16.2.0/26, 192.168.1.0/26, 192.168.2.0/26

D.

10.1.1.1/24, 10.1.2.1/24, 172.16.1.1/26, 172, 192.168.1.1/26, 192.168.2.1/26

 

Correct Answer: B

 

 

QUESTION 645

Which three values can be used to tag external EIGRP routes? (Choose three.)

 

A.

The router ID of the router that redistributed the route

B.

The administrative distance of the external protocol

C.

The protocol ID of the external protocol

D.

The cost to reach the router that redistributed the route

E.

The metric from the external protocol

F.

The router ID of the router from which the external protocol route was learned

 

Correct Answer: ACE

Explanation:

EIGRP has the notion of internal and external routes. Internal routes are ones that have been originated within an EIGRP autonomous system (AS). Therefore, a directly attached network that is configured to run EIGRP is considered an internal route and is propagated with this information throughout the EIGRP AS. External routes are ones that have been learned by another routing protocol or reside in the routing table as static routes. These routes are tagged individually with the identity of their origination.

External routes are tagged with the following information:

The router ID of the EIGRP router that redistributed the route.

The AS number where the destination resides.

A configurable administrator tag.

Protocol ID of the external protocol.

The metric from the external protocol.

Bit flags for default routing.

 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13669-1.html#route_tagging

 

 

QUESTION 646

Which VPN technology requires the use of an external key server?

 

A.

GETVPN

B.

GDOI

C.

SSL

D.

DMVPN

E.

IPsec

F.

L2TPv3

 

Correct Answer: A

Explanation:

A GETVPN deployment has primarily three components, Key Server (KS), Group Member (GM), and Group Domain of Interpretation (GDOI) protocol. GMs do encrypt/decrypt the traffic and KS distribute the encryption key to all the group members. The KS decides on one single data encryption key for a given life time. Since all GMs use the same key, any GM can decrypt the traffic encrypted by any other GM. GDOI protocol is used between the GM and KS for group key and group SA management. Minimum one KS is required for a GETVPN deployment.

Reference: http://www.cisco.com/c/en/us/products/
collateral/security/group-encrypted-transport-vpn/deployment_guide_c07_554713.html

 

 

QUESTION 647

Where should the passive-interface command be used?

 

A.

Under the routing process for interfaces that need to be routed, but prevented from peering

B.

under the routing process for interfaces that need to be routed and allowed to peer

C.

under the interface configuration for interfaces that need to be routed, but prevented from peering

D.

under the interface configuration for interfaces that need to be routed and allowed to peer

E.

under the VTY configuration within global configuration mode

 

Correct Answer: A

Explanation:

Passive-interface is a feature you enable on a per interface basis which allows a particular interface to participate in a routing process but prevents that interface from forming neighbor relationships by not sending hello packets and discarding received hello packets.

 

 

QUESTION 648

Which two statements about 6VPE are true? (Choose two.)

 

A.

It allows a service provider to use an existing MPLS network to provide VPN services to IPv6 customers.

B.

It uses MP-BGP as the carrier protocol to transport IPv6 connectivity.

C.

It provides IPv6 connectivity to MPLS-VPN customers when IPv6 overlay tunneling is also configured.

D.

It allows a service provider to use an existing MPLS network to provide global addressing to their IPv6 customers.

E.

It requires the configuration of a GRE tunnel tagged with a VLAN ID.

F.

It allows a service provider to use an existing L2TPv3 network to provide VPN services to IPv6 customers.

 

Correct Answer: AB

Explanation:

The IPv6 MPLS VPN service model is similar to that of IPv4 MPLS VPNs. Service providers who have already deployed MPLS IPv4 VPN services over an IPv4 backbone can deploy IPv6 MPLS VPN services over the same IPv4 backbone by upgrading the PE router IOS version and dualstack configuration, without any change on the core routers. IPv4 services can be provided in parallel with IPv6 services. IPv6 VPN service is exactly the same as MPLS VPN for IPv4. 6VPE offers the same architectural features as MPLS VPN for IPv4. It offers IPv6 VPN and uses the same components, such as:

 

clip_image008Multiprotocol BGP (MP-BGP) VPN address family

clip_image008[1]Route distinguishers

clip_image008[2]VPN Routing and Forwarding (VRF) instances< /p>

clip_image008[3]Site of Origin (SOO)

clip_image008[4]Extended community

clip_image008[5]MP-BGP

 

 

QUESTION 649

Refer to the exhibit. Which type of BGP peer is 192.168.1.1?

 

clip_image009

 

A.

route reflector client

B.

iBGP

C.

confederation

D.

VPNv4

 

Correct Answer: C

 

 

QUESTION 650

Which statement about Cisco Discovery Protocol is true?

 

A.

The multicast address 0100.0cdd.dddd is used as the destination address for periodic advertisements.

B.

An inactive VLAN that is configured on an access port passes periodic Cisco Discovery Protocol advertisements.

C.

The multicast address 0100.0ccc.ccd is used as the destination address for periodic advertisements.

D.

A VLAN must be active on an access port before periodic Cisco Discovery Protocol advertisements are passed.

 

Correct Answer: D

Explanation:

All CDP packets include a VLAN ID. If you configure CDP on a Layer 2 access port, the CDP packets sent from that access port include the access port VLAN ID. If you configure CDP on a Layer 2 trunk port, the CDP packets sent from that trunk port include the lowest configured VLAN ID allowed on that trunk port.

CDP messages on the active physical interfaces (Ethernet NIC) to a well-known multicast address (0100.0CCC.CCCC.)

 

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