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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. Among the following VPN technologies, those belonging to the third layer VPN are ____ .( Choose one or more )

A) VLL
B) BGP/MPLS VPN
C) L2TP VPN
D) IPSec VPN

2. During the SIP UA calling the called party through the redirect server,

A) After resetting the server to help obtain the location of the called UA , the calling UA directly initiates a call to the called UA
B) to the not right
C) Lord called UA All messages are forwarded by redirecting server
D) In addition to the external location request message, the calling UA other messages do not need to be forwarded by the redirection server

3. The following are symmetric key algorithms

A) AES
B) DSA
C) DES
D) RSA

4. Which of the following statements about the improvement of ADSL2 relative to ADSL is correct: ( Choose one or more )

A) At the same transmission rate, ADSL2 can transmit longer distances than ADSL
B) Compared with ADSL, ADSL2 adds a new operating mode
C) The frequency band of ADSL2 is twice that of ADSL
D) ADSL can support flexible bandwidth binding function, such as IMA ( Inverse Multiplexing forATM , ATM inverse multiplexing )

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

Solutions: