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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. The three routers are shown in the figure .A GRE tunnel is created between Routerl and RouLer3 .The configuration commands for the three routers are :
Routerl:
[Router1]interface Serial 0/2/0
[Router1-Serial0/2/0]ip address 10.1.1.1 24
ERouter1]interface loopback 0
[Router1-LoopBack0]ip addre ss 1.1.1.1 32
[Router1]interface Tunnel 0
[Router1-Tunnel0]source 10.1.1.1
[Router1-Tunnel0]destination 20.1.1.2
[Routerl-Tunnel0]ip address 100.1.1.1 24
[Router1]ospf
IRouter1-ospf-1]area 0
IRouter1-ospf-1-area-0.0.0.0]network 10.1.1.1 0.0.0.255
[Router1]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-Serial0/2/0]ip address 20.1.1.1 24
[Router2]ospf
IRouter1-ospf-1]area 0
IRouter1-ospf-1-area-0.0.0.0]network 10.1.1.2 0.0.0.255
IRouter1-ospf-1-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-LoopBack0]ip address 3.3.3.3 32
[Router3]interface Tunnel 0
[Router3-Tunnel0]source 20.1.1.2
[Router3-Tunnel0]destination 1 0.1.1.1
[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 Router 1 to check the connectivity, and 100% receive ICMP reply packets.
In the above process, the following description of the various routers to process packets of data, is correct ____ .( Choose one or more )

A) Router3 performs GRE encapsulation of ICMP Echo Reply packets
B) Router2 performs lP packet forwarding
C) Router 1 performs GRE encapsulation of ICMP Echo Request packets
D) Router2 performs GRE decapsulation of ICMP Echo Request packets

2. IPSec polic is configured between the two routers , after the policy is issued to the corresponding interface, the ping command is used to check the interoperability of the protected data flow, and it is found that the data passes 100% .Use displa ike sa and displa ipsec sa to order, it shows that IPSec SA is not established.
The reason for the failure of IPSec configuration is ____ .( Choose one or more )

A) The transmission mode is used in the IPSec proposal , and the protected data flow is data from network segment to network segment
B) the IKE the pre-shared-ke configuration mismatch
C) The remote-add ress address of IKE is not the interface address of the peer router
D) ACL configuration is incorrect

3. How does the PPP protocol identify the upper layer packets it carries as MPLS packets ?

A) In the PPP head of the PPP Protocol field word segment to fill in 0281
B) In the PPP head of the PPP Protocol field word segment to fill in 8847
C) In the PPP Association meeting LCP negotiation is completed the peer negotiation phase
D) In the PPP Association meeting NCP negotiation is completed the peer negotiation phase

4. Which of the following statements about LR is incorrect is

A) so that the flow rate is measured using the token bucket algorithm, would exceed the committed rate of packets into the queue buffer again, it reduces the overall packet loss rate, smooth traffic, introduces additional delay.
B) Not valid for non- IP packets
C) bits at the link layer, all packets outgoing from the interface can take effect ( critical packets except packets )
D) It is an active traffic adjustment measure that limits the total rate of packets sent downstream from an interface

5. The configuration commands on the MSR router are as follows:
acl number 2003
rule 0 permit source 192.168.0.0 0.0.0.255
#
traffic classifier 1operator or
if-match acl 2003
#
traffic behavior 1
filter den
#
qos polic 1
classifier 1behavior 1
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos appl polic 2 outbound
Then when the source address are 192.168.2.2 , 192.168.0.2 the packets from the port G0 / 1 forwarding outwardly, the following statement is correct _____

A) Forwarding of packets with the source address of 192.168.0.2 is blocked
B) Packets with the source address of 192.168.2.2 are forwarded normally
C) Forwarding of packets with the source address of 192.168.2.2 is blocked
D) Packets with the source address of 192.168.0.2 are forwarded normally

Solutions: