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Share some HCNP-R&S H12-222-ENU exam questions and answers below.
The VPN configuration on a device is as follows: which description of this configuration command is correct?
A. This command is configured on the CE device of the customer network.
B. route-distinguisher 1: 1 indicates that the RD value is 1: 1, the RD does not need to be globally unique.
C. vpn-target 1: 1 export-extcommunity indicates that the VPN export target is 1: 1.
D. vpn-target 2: 2 import-extcommunity indicates that the VPN import target is 2: 2 and the import target can only set to one.
Answer: C

The length of the MPLS header is 32 bits, including 20 bits'label in length is used for message forwarding; the 3 bits' EXP in length is used to bear the precedence in IP message; the 1bit's stack bottom label S is used to indicate whether it is the last label (MPLS labels can be nested in multiple layers). Which of the following description about the 8bits' TTL in length is correct?
A. The role is similar to the TTL of the IP header, to prevent message loops.
B. it is mainly used for control of label management.
C. it is used for control of the upstream device when distributing the label.
D. Limit the LSR.
Answer: A

Which of the following options do not belong to the Overlay VPN model technology?
A. GRE
B. IPSec VPN
C. SSL VPN
D. L2TP VPN
Answer: D

You do not need to use NAT for address translation when hosts and servers in the same security zone exchange visits.
A. True
B. False
Answer: B

Which of the following options does the role of Agile Controller server not include?
A. Business Manager
B. Business controller
C. Security manager
D. Business checker
Answer: D

Which of the following description about the MPLS's label space is wrong?
A. 16~1023 are the shared label space between static LSP and static CR-LSP.
B. Above 1024 is the shared the label space between LDP, RSVP-TE, MP-BGP and other dynamic signaling protocols.
C. The last hop receives the message with the label control as 0 and proceeds IP forwarding or the next layer label forwarding directly.
D. When the penultimate hop LSR performs label switching, if found that the label value is 3 after switching, the label is popped and the message is sent to the next hop.
Answer: C

Which of the following description about the RT is correct? (Multiple choice)
A. Each VPN instance is associated with one or more pairs of VPN target attributes, used to control VPN routing information distribution and reception between each site.
B. RT can be divided into two types of VPN Target attributes: Export Target and Import Target.
C. Export Target and Import Target settings are independent of each other, and both can set up multiple values, to achieve flexible VPN access control.
D. The RT value is advertised to the neighbor through Update messages in the form of BGP extended community attributes.
Answer: ABCD

IntServ model, before the application sends a message, need to apply for reservation resources to the network.
A. True
B. False
Answer: A

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