Q1. Refer to the exhibit. 

The NOC engineer noticed that the R2 router system clock is not updated and synchronized to the NTP server that is configured on the R10 router. What is the issue? 

A. The access list NTP_Clients is missing. 

B. The access group is misconfigured. 

C. The maximum number of peers and client associations is exceeded. 

D. The authentication key is mismatched. 

E. The PE2 router should be configured as an NTP peer instead of as a client. 

View Answer

Q2. Refer to the exhibit. 

Two ISPs have decided to implement MPLS Inter-AS TE. All routers have full reachability to all subnets. RSVP and MPLS TE have been enabled in all routers interfaces in both ISPs, yet Tunnel 14 is not up Which configuration will fix this issue? 

A. On R1, apply the command: 

interface Tunnel14 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.4 nbr-igp-id ospf 10.10.10.1 

B. On R1, apply the command: 

interface Tunnel14 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.4 nbr-igp-id isis 10.0000.0000.0004.00 

C. On R1. apply the command: 

interface Tunnel 14 

tunnel mpls traffic-eng path-option 1 dynamic 

D. I On R2. apply the command: 

interface Fa0/1 

ip router isis 

! 

router ospf 1 

redistribute isis subnets 

On R3, apply the command: 

interface Fa0/1 

ip ospf 1 area 0 

! 

router isis 

redistribute ospf 1 

E. On R2, apply the command: 

interface Fa0/1 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.3 nbr-igp-id ospf 10.10.10.2 

! 

On R3, apply the command: 

interface Fa0/1 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.2 nbr-igp-id isis 10.0000.0000.0003.00 

F. On R2, apply the command: 

interface Fa0/1 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.3 nbr-igp-id isis 10.0000.0000.0003.00 

! 

On R3, apply the command: 

interface Fa0/1 

mpls traffic-eng passive-interface nbr-te-id 10.10.10.2 nbr-igp-id ospf 10.10.10.2 

View Answer

Q3. Due to recent acquisitions, a company's MPLS infrastructure is growing very quickly. Concerns arise about labeling each and every IP address on the service provider core network. The IP address space is designed as per following: 

. Service provide ip address range is: 10.0.0.0/16 

. All loopback addresses use subnet mask /32 

. 10.0.0.0/24 range is used for loopback addresses 

. All other subnet masks used for links are /24 and /25 

Which command would significantly reduce the label allocations without compromising LDP functionalities? 

A. ip prefix-list Llst1 deny 10.0.0./16 le 20 ge 25 

! 

mpls Idp label 

allocate global prefix-list List1 

B. access-list 1 permit 10.0.0.0 0.0.255.255 

mpls Idp neighbor 10.0.0.1 labels accept 3 

C. mpls Idp label 

allocate global host-routes 

D. mpls Idp password required for 10 

! 

access-list 10 permit 10.0.0.1 

access-list 10 permit 10.0.0.2 

access-list 10 permit 10.0.0.3 

View Answer

Q4. Which information is carried in the OSPFv3 intra-area Prefix LSA? 

A. All link-local addresses 

B. All IPv6 prefix and topology information that OSPFv2 included in Router LSA and Network LSA 

C. List of options associated with the link to all other routers attached to the link 

D. All prefix-specific information that OSPFv2 included in Router LSA and Network LSA 

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Q5. What is the main advantage of H-VPLS over VPLS? 

A. H-VPLS provides redundancy. 

B. H-VPLS provides security. 

C. H-VPLS improves the scalability. 

D. H-VPLS allows a broader use of protocols. 

View Answer

Q6. Which are the three benefits of using the Yang model? (Choose three.) 

A. Reduce lab footprint 

B. Improve access to resources 

C. Support interoperability that provides a standard way to model management data 

D. Support simplified network management applications 

E. Provide a scale virtual lab environment 

F. Support programmatic interfaces 

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Q7. Refer to the exhibit. 

IS-IS configuration has been deployed using the default IS-IS metric value and default IS-IS metric-style. The SP decides to implement MPLS TE in all routers, except R5. In order to maintain IS-IS adjacency between R3 and R5 without impacting reachability, which command should be configured on R3 router under the IS-IS process? 

A. metric-style narrow 

B. metric-style wide 

C. metric-style narrow transition 

D. metric-style transition 

View Answer

Q8. Refer to the exhibit. Both MPLS TE tunnel 14 and MPLS TE tunnel 124 pass over the same physical links. Which configuration on R1 enables TE 14 to be the primary tunnel and TE 124 to become active when TE 14 is admin disabled? 

A. Interface Tunnel14 

tunnel mpls traffic-eng priority 3 1 

! 

Interface Tunnel124 

tunnel mpls traffic-eng priority 5 4 

B. Interface Tunnel14 

tunnel mpls traffic-eng priority 4 1 

! 

`Interface Tunnel124 

tunnel mpls traffic-eng priority 3 2 

C. Interface Tunnel14 

tunnel mpls traffic-eng priority 7 7 

! 

Interface Tunnel124 

tunnel mpls traffic-eng priority 1 1 

D. Interface Tunnel14 

tunnel mpls traffic-eng priority 3 2 

! 

Interface Tunnel124 

tunnel mpls traffic-eng priority 4 1 

View Answer

Q9. Refer to the exhibit. 

The prefix 10.1.1.64/28 should be advertised to the PE router, yet the prefix is not being received by the PE. Which configuration should be applied on CE in order to fix this issue? 

A. jp prefix-list ROUTES_TO_SP seq 1 permit 10.1.1.64/28 

B. router bgp 65000 no network 10.1.1.64 mask 255.255.255.240 network 10.1.1.128 mask 255.255.255.128 

C. ip prefix-list ROUTES_TO_SP permit 10.1.1.64/28 

D. router bgp 65000 no network 10.1.1.64 mask 255.255.255.240 network 10.1.1.0 mask 255.255.255.0 

View Answer

Q10. In order to prevent malicious traffic flows, how does BGPsec protect prefix advertisements? 

A. It validates only the originating AS. 

B. It validates routes with encryption. 

C. It validates the AS path. 

D. It validates the next-hop AS. 

View Answer