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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. According to Nquist 's theorem, the telephone system samples human voices every second to satisfy the complete representation of the characteristics of the voice signal.

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

2. The following are symmetric key algorithms

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

3. When the user uses the phone, after picking up the phone handle and inputting the called number, which of the following signaling does the ringing of the called phone belong to ______ .

A) letter information signaling
B) monitoring tube signaling
C) Call call signaling
D) to address signaling

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

5. Compared with ordinary data flow, voice flow is more sensitive to delay and jitter.The field that can be used to mark voice traffic in a data packet for priority processing by network equipment is ____

A) IP Precedence
B) number of source data streams / object IP address, port number, protocol type pentad
C) DSCP
D) 802.1p

Solutions: