Instantly download H12-261-ENU training test engine

Which of the following statement about the security association SA in IPsec is wrong?

• A. There must be a two-way SA between IPsec peers to establish an IPsec VPN connection.
• B. IPsec only supports the use of symmetric encryption algorithms to encrypt data.
• C. The SA is uniquely identified by a triplet that includes the Security Parameter Index (SP), the source IP address, and the security protocol number used (AH or ESP).
• D. Use display IPsec to view information about encryption algorithms, traffic, and other information used between another IPsec peer.

The Type 5 LSA in OSPF are used to pass external routes. Which of the following statements about the Type 5 LSA are wrong?

• A. Type 5 LSAs are advertised by the ASBR and flooded in the OSPF network in the non-Stub/NSSA area.
• B. The FA address is included in the Type 5 LSA, and the FA address is 0.0.0.0, but has no practical effect as a reservation.
• C. Configure the corresponding policies on the ABR and ASBR to filter the Type 5 LSA.
• D. The router in the same area as the ASBR can calculate the external route through the intra-area LSA and the Type 5 LSA.

Regarding the processing mode of MPLS for TTL, which of the following description is correct?

• A. Uniform simulation, when the IP packet passes through the MPLS network, the IP TTL of the ingress node is decremented by 1, and the MPLS TTL field is a fixed value.
• B. In the Pipe mode, when an IP packet passes through the MPLS network, the IP TTL is decremented by 1 to the MPLS TTL field in the ingress node.
• C. The TTL of the MPLS label has the same meaning as the TTL in the IP header, which can prevent the MPLS network from generating a routing loop (according to the reason A)
• D. In MPLS VPN, if you want to hide the structure of the MPLS backbone network, you can use the uniform mode in Ingress for private network packets.

Which type of prefix will the router running BGP advertise to its own IBGP neighbor (assuming the router is not configured as a route reflector)?

• A. Prefix existing in routing shows
• B. The prefix is learned through the EBGP neighbor, or the prefix is learned from the RR.
• C. The prefix is learned through the EBGP neighbor, or the prefix is learned locally through the network or route introduction.
• D. The prefix is learned through other BGF neighbors, or the prefix is locally learned through network or route introduction.
• E. The prefix is learned through other IBGP neighbors, or the prefix is learned from the EBGP neighbor, or the prefix is learned through the route introduction.

If the PPP link between R1 and R2 is shown, and the direct connection port is not on the same network segment, but the R1 and R2 direct connection ports can communicate, and the Ethernet link cannot communicate under the same IP planning, what is the reason? (Multiple choice)

• A. R1 and R2 are connected to the POS port, and the 32-bit host route of the direct connection port of the other party is learned through IPCP.
• B. The interconnected POS port of R1 and R2 learns the MAC address of the peer interface through LCP, and does not require the ARP request MAC address.
• C. R1 and R2 are connected to the POS port, and the 24-bit subnet route of the direct connection port of the other party is learned through IPCP.
• D. The data packets of the interconnected POS interface of R1 and R2 do not need to encapsulate the Ethernet header, and do not need to use ARP to request the MAC address.