H3C GB0-391 問題集

質問 1：
Which of the following descriptions about H.323 terminals are correct?
A. P pass H.323 terminals may not support the video feature
B. P through PST telephone is a standard H.323 terminal
C. & Poor pass H.323 terminal may not support fax functionality
D. even connected to the PSTN telephone network fax machine is a standard H.323 terminal equipment
正解：A,C

質問 2：
Which of the following codes has the lowest requirement for broadband_____ ?
A. G.729
B. G.711
C. G.723
D. G.726
正解：C

質問 3：
Which of the following descriptions of the traditional telephone system is correct is ____ .
A. electrically telephone subscriber loop connected by the PBX or central office switches, are connected to the telephone subscriber loop and the PBX a line between the pair, including tip and Ring , wherein Tip ground, Ring then PBX negative electrode.
B. electrically telephone ringing tone by the remote PBX providing a voltage or central office switches completed, the dial tone is provided by the telephone set voltage accomplished.
C. electrical telephones and facsimile machines belong to the FXS ordinary telephone devices can be connected to a central office switch via an ordinary telephone line FXO interface.
正解：A

質問 4：
The calling UA sends a request message and receives a 2000K response from the called UA .How can the calling UA cancel the request ?
A. Li ie the called UA send Cancel message
B. No law revoked just please request
C. Li ie the called UA sent Back message
D. Li ie the called UA sent BE message
正解：B

質問 5：
Which of the following are signaling _____ .
A. by the user when using the phone, pick up the telephone handset, the handset came from the dial tone.
B. by the user using the phone, pick up the telephone handset called number, the called telephone ringing
C. by the user using the phone, pressing the number keys to PBX transmits the called number representing a range of low frequency tones and high frequency due.
D. by the user using the phone, pick up the telephone handset called number, outgoing echo from handset bell
正解：A,B,D

質問 6：
Configure the following commands on the MSR router:
qos cql 1 queue 1 serving 1000
qos cql 1 queue 2 serving 2000
qos cql 1 queue 3 serving 500
qos cql 1 queue 4 serving 1500
qos cql 1 protocol ip tcp ftp-data queue 2
qos cql 1 protocol ip udp tftp queue 3
qos cql 1 protocol ip pop3 queue 4
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
duplex full
speed 10
qos cq pql 1
From G0 / 1 forward traffic packets including the Telnet , ftpdata , the TFTP and POP3 flow amounts are 4Mbps , port no other traffic, the TFTP the Data broadband packet can be used is approximately
A. feature set error
B. 40%
C. 20%
D. 10%
E. 30%
正解：B

質問 7：
The processing steps of the rules configured in CAR for packets are in order from front to back:
A. Review assessment, classification and disposal
B. Comments estimate discarded, continued
C. Comments estimates continue discarded
D. divided type, evaluation, disposal
正解：D

質問 8：
Common VPI/VCI values in ADSL applications include ____ .( Choose one or more )
A. 0/16
B. 0/30
C. 0/35
D. 0/32
正解：C,D

質問 9：
Execute the displa interface tunnel command on a router to display the information of the GRE tunnel interface as follows:
<Router> displa interface Tunnel O
Tunnelo current state: UP
Line protocol current state: UP
Description: Tunnelo Interface
The Maximum Transmit Unit is 1476
Internet Address is 192.1.2.1/24 Primar
Encapsulation is TUNNEL , agg regation ID not set
Tunnel source 10.1.11.1 , destination 10.1.13.1
Tunnel keepalive enable , Period ( 10 s ) , Retries ( 3 )
Tunnel protocol/transport GRE/IP
GRE ke disabled
Checksumming of GRE packets disabled
Last 300 seconds input: 0 btes/sec , 0 packets/sec
Last 30 0 seconds output: 0 btes/sec , 0 packets/sec
4 packets input , 72 btes
0 input error
1 packets output , 24 btes
0 0utput error
It can be known from the above information.( Choose one or more )
A. The tunnel interface is in the UP state, and the MTU is 1476 bytes
B. tunnel channel source lP address 192.1.1.1
C. tunnel channel does not start verification, verification can not start
D. The Keeplive function is enabled on the tunnel interface .Once the router does not receive the Keeplive message from the other party within 30s , the tunnel is considered unavailable.Although the tunnel interface is still in the UP state, the tunnel interface is a static route for the outgoing interface Will disappear from the routing table ;
正解：A,C