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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. A VoIP network is interconnected with a PSTN network and adopts the H.323 protocol.It is required that in addition to normal voice calls, it must also be able to conduct telephone conferences with more than three rooms.The VoIP network must include H.323 components including

A) MCU
B) net off
C) network gatekeeper
D) terminating end

2. The process of LDP session establishment is

A) Jian Li TCP connection Neighbor Discovery > to establish the session > session maintenance
B) neighbor living found > establish a session > establish a TCP connection > session maintenance
C) Jian Li session > ND > establish a TCP connection > session maintenance
D) neighbor living found > establish a TCP connection > to establish the session > session maintenance

3. The four routers R1 , R2 , R3, and R4 are connected in sequence, and Loopback0 interfaces are created on R1 and R4 , and the interface addresses are 1.1.1.1 and 4.4.4.4 respectively.The four devices are configured with static routing protocols to ensure Loopback0 of R1 and R4 .The address is reachable, and a GRE Tunnel is established between R1 and R4 .Check the tunnel interface information on R1 as follows:
[R1]displa interface Tunnel O
Tunnelo current state: UP
Tunnelo current statle: UP
Line protocol current state: UP
Description: Tunnel 0 Interface
The Maximum transmit Unit is 1476
Internet Addess is 10.1.1 .1/30 Primar.
Encapsulation isTUNNEL aggregation ID not set
Tunnel source l.1.1.1 destination 4.4.4.4
Tunnel keeepalive disable
Tunnel protocol/transport GRE/IP.
GRE key disable
Checksumming of GRE packets disabled
Last 300 seconds input:.2 btes/secl 0 packet/sec.
Last 300 seconds output:..2 bytes/sec , 0 packets/sec.
15packets input 840bytes.
0 input error
27packets output , 1248btes
0 0utput error
At this time, if the interrupt R2 and R3 link between, the following statement is correct ____

A) The IP address of the Tunnel interface of R4 should be 10.0.0.2.
B) The status of the Tunnel interface on R1 is Down
C) Rl on -Tunnel interface remains UP state
D) The source IP of the Tunnel interface of R4 is 4.4.4.4 , and the destination IP is 1.1.1.1

4. According to Nquist 's theorem, the telephone system samples human voice ______ times per second in order to fully represent the characteristics of the voice signal.

A) 2000
B) 8000
C) 4000
D) 6000

5. In a VoIP network, which of the following factors are related to the bandwidth saved by VAD technology ?

A) selected encoding type used
B) selected by signaling type
C) mesh network congestion degree
D) said language and characteristics of the speaker

Solutions: