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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. In L2TP VPN , LAC ( LATP Access Concentrator , L2TP access concentrator ) receives the IP data packet sent from the remote system to the server , and needs to encapsulate the data packet and send it to LNS ( L2TP Network Server , L2TP) Network server ) , the encapsulation format of the data packet transmitted between LAC and LNS is

A) Private network data packet ->L2TPT header ->PPP header ->UDP header -> public network IP header
B) Private network data packet ->PPP header ->UDP header ->L2TPT header -> Public network IP header
C) Private network data packet ->PPP header ->L2TPT header ->UDP header -> Public network IP header
D) Private network data packet ->PPP header ->UDP header -> public network IP header ->L2TPT header

2. The three routers are shown in the figure .A GRE tunnel is created between Routerl and Router3 .The configuration commands for the three routers are:
Router1 :
[Routerl]interface Serial 0/2/0
[Routerl-Serial0/2/0]ip address 10.1.1.1 24
[Routerl]interface loopback 0
[Routerl-LoopBack0]ip address l.1.1.1 32
[Routerl]interface Tunnel 0
[Routerl-Tunnel0 ]source 10.1.1.1
[Routerl-Tunnel0]destination 20.1.1.2
[Routerl-Tunnel0]ip address 100.1.1.1 24
[Routerl]ospf
[Routerl-ospf-l]area 0
[Routerl-ospf-l-area-0.0.0.0] network 1 0.1 .1 .1 0.0.0.255
[Routerl]ip route-static 3.3.3.3 32 100.1.1.2
Router2:
[Router2]interface Serial 0/2/0
[Router2-Serial0/2/0]ip address 10.1.1.2 24
[Router2]interface Serial 0/2/1
[Router2-Serial0/2/1]ip address 20.1.1.1 24
[Router2]ospf
[Router2-ospf-l]area 0
[Router2-ospf-l-area-0.0.0.0] network 10.1.1.2 0.0.0.255
[Router2-ospf-l-area-0.0.0.0] network 20.1.1.1 0.0.0.255
Router3:
[Router3]interface Serial 0/2/0
[Router3-Serial0/2/0]ip address 20.1.1.2 24
[Router3]interface loopback 0
[Router3-Loop Back0]ip address 3.3.3.3 32
[Router3]interface Tunnel 0
[Router3-Tunnel0]source 20.1.1.2
[Router3-Tunnel0]destination 10.1.1.1
[Router3-Tunnel0]ip address 100.1.1.2
[Router3]ospf
[Router3-ospf-l]area 0
[Router3-ospf-l-area-0.0.0.0] network 20.1.1.2 0.0.0.255
[Router3]ip route-static l.1.1.1 32 100.1.1.1
Use the command ping-a 1.1.1.1 3.3.3.3 on the Router to check the connectivity, l00% received icmp reply packets.
In the process of upward progress, the following describes the processing of data packets by each router.The correct one is _____ .( Choose one or more )

A) Router2 performs GRE decapsulation of ICMP Echo Request packets
B) Router .1 for ICMP Echo Request packet GRE decapsulates
C) Router3 for ICMP Echo reply message packets GRE encapsulation
D) Router .1 for ICMP Echo reply message packets GRE encapsulation

3. About CBQ said law incorrect ______

A) It is a congestion management technology implemented by QoS strategy
B) package contains .1 th BQ , for supporting the AF service, broadband guaranteed queue and controllable delay
C) package contains .1 th the LLQ , to support EF traffic, is transmitted absolute priority, guaranteed latency
D) packet contains .1 th default queue for supporting the BE service, using the WFQ queue scheduling

4. AAA supports the authorization method of ______ .

A) This authorizes
B) Direct access authorization
C) HWTACACS authorization
D) RADIUS authorization

5. When a user's private network message is forwarded in the BGP MPLS VPN network, which of the following parameters may appear in the user's private network message ?

A) Private network label
B) RD
C) RT
D) Public network label

Solutions: