Ensurepass

 

QUESTION 61

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM- SM operations?

 

A.  immediately after receiving the first packet on the shared tree for a given (S,G)
B.  after receiving over 1 kb/s traffic onthe shared tree for a given (S,G)

C.  10 seconds after receiving the first packet on the shared tree for a given (S,G)


D.  30 seconds after receiving the first packet on the shared tree for a given (S,G)
E.  after receiving over 10 kb/s traffic onthe shared tree for a given (S,G)

 

Answer: A

 

 

QUESTION 62

Which four statements about the Carrier Supporting Carrier (CSC) feature are true? (Choose four)

 

A.  MPLS is required between the PE and CE routers that connect the backbone carrier to the customer carrier.

B.  The backbone carrier must enable the PE router to check that the packets it receives from the CE

router contain only the labels that the PE router advertised to the CE router.

C.  Every packet that crosses the backbone carrier must be encapsulated so that the packet includes

MPLS labels

D.  AII PE routers that link the backbone carrier to the customer carrier must run Route Target Rewrite.

E.  Arouting protocol is required between the PE and CE routers that connect the backbone carrier to the customer carrier. The routing protocol enables the customer carrier to exchange IGP routing information with the backbone carrier.

 

Answer: ABCE

 

 

QUESTION 63

Which of these is not a component of MPLS traffic engineering?

 

A.  trunk admission control

B.  forwarding traffic to tunnel

C.  information distribution

D.  path selection, calculation, and setup

E.  traffic patterns prediction

 

Answer: E

 

 

QUESTION 64

Which are three advantages of PPPoA implementation? (Choose three)

 

A.  NAP and NSP provide secure access to corporate gateways without managing end- to-end PVCs. NAP and NSP use Layer 3 routing, Layer 2 Forwarding, or Layer 2 Tunneling Protocol tunnels. Hence, they can scale their business models for selling wholesale service.

B.  The NSP can oversubscribe by deploying idle and session timeouts using an industry standard

RADIUS server for each subscriber.

C.  Only a single session per CPE on one virtual channel (VC). The username and password are configured on the CPE, so all users behind the CPE for that particular VC can access only one set of services. Users cannot select different sets of services, although using multiple VCs and establishing different PPP session on different VCs is possible.

D.  If a single IP address is provided to the CPE, and NAT or PAT is implemented, certain applications such as IPTV, which embed IP information in the payload, well not work. Additionally, if an IP subnet feature is used, an IP address also has to be reserved for the CPE.

E.  PPPoA can use the features on the Cisco Service Selection Gateway (SSG)

 

Answer: ABE

 

 

QUESTION 65

Which statement about VPNv6 addresses is true?

 

A.  The VPNv6 address is a 96-bit route distinguisher and a 128-brt IPv6 address


B.  The VPNv6 address is a 64-bit route distinguisher and a 128-bit IPv6 address
C.  The VPNv6 address is a 64-brt route distinguisher and a 96-brt IPv6 address
D.  The VPMv6 address is a 96-brt route distinguisher and a 96-bit IPv6 address

E.  The VPNv6 address is a 128-bit route distinguisher and a 128-brt IPv6 address

 

Answer: B

 

 

QUESTION 66

Which two statements about RPF checks in Multicast Source Discovery Protocol (MSDP) are true? (Choose two)

 

A.  RPF Check should be done against the route to the source of the corresponding PIM- SM domain.
B.  checking session advertisement (SA) messages causes massages looping.

C.  The RPF check ensures that there is a working redundancy for anycast RPs.

D.  RPF Check should be done against the route to the RP of the PIM-SM domain that originated the SA.
E.  It prevents message looping, and session advertisement (SA) messages must be RPF checked.

 

Answer: DE

 

 

QUESTION 67

When will the primary processor core dump run in case of a switchover?

 

A.  never takes place

B.  periodically

C.  during switchover

D.  after switchover

E.  before switchover

 

Answer: D

 

 

QUESTION 68

What is the label for MPLS over ATM?

 

A.  VPI 16

B.  DLCI

C.  VPI and VCI
D.  circuit number
E.  PVC and SVC

 

Answer: C

 

 

QUESTION 69

Which statement about MPLS traffic engineering policy-based tunnel selection (PBTS) is not true?

 

A.  The tunnel that is not configured with the policy-class command acts as the default.
B.  EXP selection is between multiple tunnels to the same destination

C.  There is no requirement for IGP extensions

D.  Tunnels are configured using the policy-class command and carry multiple EXP values.
E.  It supports VRF traffic, IP-to-MPLS switching, and MPLS-to-MPLS switching

 

Answer: D

 


QUESTION 70

What is one of the primary overhead fields associated with the Optical Payload Unit (OPU)?

 

A.  path monitoring

B.  tandem connection monitoring activation deactivation (TCM ACT)
C.  Payload Structure Identifier (PSI)

D.  multiframe alignment signal (MFAS)
E.  section monitoring

 

Answer: C

 

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