Ensurepass

 

QUESTION 91

Which statement about Frame Relay is not true?

 

A.  Static mapping is used when the remote router does not support Inverse ARP.

B.  Frame Relay Inverse ARP requires LMI capability to construct an address to the DLCI mapping table on the router.

C.  Frame Relay Inverse ARP is disabled by default in Cisco IOS Software for all protocols that are enabled on the physical interface.

D.  Inverse ARP does not work when LMI is disabled.

E.  Frame Relay provides forward and backward congestion notification messages.

 

Answer: C

 

 

QUESTION 92

Cisco IOS XR has implemented a nonstop routing feature so that when RP failover occurs, the routing information can be recovered locally. Which protocol does not support the NSR feature?

 

A.  OSPF
B.  LDP
C.  BGP
D.  IS-IS
E.  RSVP

 

Answer: E

 

 

QUESTION 93

Which three of these are types of Ethernet Virtual Connections (EVCs) in the MEF concept? (Choose three)

 

A.  rooted multipoint EVC (E-Tree)
B.  point-to-point EVC (E-Line)

C.  point-to-multipoint EVC (E-Tree)
D.  hub spoke EVC (E-Tree)

E.  multipoint-to-multipoint EVC (E-LAN)

 

Answer: ABE

 

 

QUESTION 94

Which three components are included in the Cisco IOS XR infrastructure? (Choose three.)

 

A.  modular line cards

B.  shelf controllers

C.  route processors

D.  service processors

E.  distributed service cards

 

Answer: BCD

 

 

QUESTION 95

Which three statements about the route target (RT) are true? (Choose three.)

 

A.  The RT is a BGP extended community.

B.  The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address.
C.  When a VPN route that is learned from a CE router is injected into BGP, one or more RTs are

associated with it

D.  The distribution of VPN routing information is controlled through the use of VPN RTs

E.  When a VPN route that is learned from a CE router is injected into BGP, there is always one RT that is associated with it.

 

Answer: ACD

 

 

QUESTION 96

What is the typical marked DSCP value for a voice signaling packet in VoIP technology?

 

A.  BE

B.  AF41

C.  AF21

D.  EF

E.  AF31

 

Answer: E

 

 

QUESTION 97

Which description of BGP authentication is true?

 

A.  MD5 has been used by BGP to encrypt BGP update packets.

B.  BGP uses a message-digest algorithm to authenticate BGP peers

C.  A plain-text password authentication is an option of BGP authentication

D.  EBGP peers authentication is faster than IBGP peers authentication

E.  BGP uses public key and private key to authenticate BGP peers.

 

Answer: B

 

 

QUESTION 98

When you design QoS on CE for an MPLS Layer 2 VPN, which three things should be considered? (Choose three.)

 

A.  Layer 2 access link QoS design

B.  enterprise-to-service-provider mapping models

C.  Layer 3 link access QoS design

D.  service provider service level agreements

E.  Layer 2 link access load balancing

 

Answer: ABD

 

 

QUESTION 99

Which three are the ATM cell header fields? (Choose three.)

 

A.  cell loss priority (CLP)
B.  discard eligibility (DE)

C.  head error control (HEC)
D.  generic flow control (GFC)

E.  forward explicit congestion notification (FECN)

 

Answer: ACD

 

 

QUESTION 100

What are the two benefits of graceful restart? (Choose two)

 

A.  Graceful restart allows session information recovery without disruption to the network.

B.  A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kept on state information, which helps the failed node recover faster and does not affect the current forward traffic.

C.  Graceful restart allows a node to recover state from its neighbor when there is no RP or before the device undergoes SSO.

D.  Graceful restart does not allow session information recovery.

E.  During a graceful restart, the router removes any stale prefixes after a timer for stale entries expires

 

Answer: AB

 

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