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Q201. Which two statements about the OSPF two-way neighbor state are true? (Choose two.) 

A. Each neighbor receives its own router ID in a hello packet from the other neighbor. 

B. Each neighbor receives a hello message from the other neighbor. 

C. It is valid only on NBMA networks. 

D. It is valid only on point-to-point networks. 

E. Each neighbor receives an acknowledgement of its own hello packet from the other neighbor. 

F. Each neighbor receives the router ID of the other neighbor in a hello packet from the other neighbor. 

Answer: A,E 


Q202. In GETVPN, which key is used to secure the control plane? 

A. Traffic Encryption Key (TEK) 

B. content encryption key (CEK) 

C. message encryption key (MEK) 

D. Key Encryption Key (KEK). 

Answer:

Explanation: 

GDOI introduces two different encryption keys. One key secures the GET VPN control plane; the other key secures the data traffic. The key used to secure the control plane is commonly called the Key Encryption Key (KEK), and the key used to encrypt data traffic is known as Traffic Encryption Key (TEK). 

Reference: Group Encrypted Transport VPN (Get VPN) Design and Implementation Guide PDF 


Q203. Which statement about LISP encapsulation in an EIGRP OTP implementation is true? 

A. OTP uses LISP encapsulation for dynamic multipoint tunneling. 

B. OTP maintains the LISP control plane. 

C. OTP uses LISP encapsulation to obtain routes from neighbors. 

D. LISP learns the next hop. 

Answer:


Q204. Refer to the exhibit. 

R1 is configured as shown. R1 is able to establish a neighbor adjacency only with R2. Which addition must you make to the R1 configuration to allow it to establish an adjacency with R3? 

A. interface gigabitethernet 0/1 

ip address 10.1.0.1 255.255.255.0 

ip ospf network point-to-point 

B. interface gigabitethernet 0/1 

ip address 10.1.0.1 255.255.255.0 

ip ospf 1 area 0 

C. router ospf 1 

network 10.1.0.0 0.0.0.255 area 1 

D. router ospf 1 

area 0 stub 

Answer:

Explanation: 

To enable interfaces and networks with OSPF, the networks need to be specified in the network statement. In the configuration shown, only 10.0.0.0/24 has been enabled, we are missing the network connecting to R3 (10.1.0.0/24). 


Q205. Refer to the exhibit. 

R3 is failing to join the multicast group 224.1.1.1 that is sourcing from R1. Which two actions can you take to allow multicast traffic to flow correctly? (Choose two.) 

A. Remove the static multicast route on R1. 

B. Configure OSPF on R1 and R3 to include the tunnel interfaces. 

C. Add an additional static multicast route on R2 for multicast group 224.1.1.1 toward R3. 

D. Replace the static multicast route on R1 to send traffic toward R2. 

E. Remove the static unicast route on R1. 

F. Add an additional static unicast route on R2 toward the loopback interface of R3. 

Answer: A,B 

Explanation: 

Since the tunnel interfaces are not part of OSPF, the best path to the multicast source of R1 from R3 would be over the Gi0/0 path via OSPF. However, the static mroute is configured to use the tunnel, so this causes an RPF failure used in Sparse Mode. Best fix is to add the tunnel interfaces into OSPF and remove the static mroute so that that the RPF check no longer fails. 


Q206. Which set of commands conditionally advertises 172.16.0.0/24 as long as 10.10.10.10/32 is in the routing table? 

A) 

B) 

C) 

D) 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

Advertise maps are used for conditional routing to advertise specified prefixes if something which is specified in exist map exists. In our question we need to advertise 172.16.0.0/24 if 10.10.10.10/32 exists in the routing table so we have to use commanD. “neighbor x.x.x.x advertise-map <prefix-list of 172.16.0.0/24> exist-map <prefix-list of 10.10.10.10/32>”. Therefore B is correct. 


Q207. Which data plane protocol does EIGRP Over the Top use? 

A. MPLS 

B. GRE 

C. LISP 

D. IP-in-IP 

Answer:

Explanation: 

The EIGRP Over the Top solution can be used to ensure connectivity between disparate Enhanced Interior Gateway Routing Protocol (EIGRP) sites. This feature uses EIGRP on the control plane and Locator ID Separation Protocol (LISP) encapsulation on the data plane to route traffic across the underlying WAN architecture. EIGRP is used to distribute routes between customer edge (CE) devices within the network, and the traffic forwarded across the WAN architecture is LISP encapsulated. Therefore, to connect disparate EIGRP sites, you must configure the neighbor command with LISP encapsulation on every CE in the network. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/xe-3s/ire-xe-3s-book/ire-eigrp-over-the-top.html 


Q208. Which two statements about the assert process in LAN-based PIM are true? (Choose two.) 

A. If the metrics are the same, the router with the lowest advertised routing protocol metric for that route is elected. 

B. If the metrics are the same, the router with the highest IP address on the LAN is elected. 

C. If the metrics are the same, the router with the highest advertised routing protocol metric for that route is elected. 

D. If the metrics are the same, the router with the lowest IP address on the LAN is elected. 

Answer: A,B 


Q209. Which two statements about the default behavior of IS-IS are true? (Choose two.) 

A. The default IS-IS router type is L1/L2. 

B. The default IS-IS metric type is wide. 

C. The default IS-IS interface circuit type is L1/L2. 

D. By default, two IS-IS routers must use the same hello interval and hold timer in order to become neighbors. 

Answer: A,C 


Q210. In a nonbackbone OSPF area, all traffic that is destined to the Internet is routed by using a default route that is originated by the ABR. Which change in the configuration of the OSPF area type causes traffic from that area that is destined to the Internet to be dropped? 

A. The OSPF area changes from NSSA to totally stubby area. 

B. The OSPF area changes from NSSA to regular area. 

C. The OSPF area changes from stub area to totally stubby area. 

D. The OSPF area changes from stub area to NSSA. 

Answer:

Explanation: 

The ABR for the NSSA generates the default route, but not by default. To force the ABR to generate the default route, use the area <area id> nssa default-information originate command. The ABR generates a Type 7 LSA with the link-state ID 0.0.0.0 and is advertised inside the NSSA. This default route will be propagated inside the NSSA as Type 7 LSA 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13692-21.html#nssas