最新なH3C GB0-391問題集（468題）、真実試験の問題を全部にカバー！

質問 1：
The cable used in the Ethernet 1000BASE-LX standard is _______ The maximum transmission distance is ________ .
A. multi- mode fiber, 550m
B. single -mode optical fiber, 5000m
C. 2 pairs of Category 5 UTP twisted pair, 100m
D. 2 pairs of STP twisted pair, 25m
E. 4 pairs of Category 3 UTP twisted pair, 100m
F. 4 pairs of Category 5 UTP twisted pair, 100m
正解：B

質問 2：
The benefits of using NAT technology for security defense are _____ .
A. make use NAT technology, the internal and external networks are blocked
B. make use NAT after technical problems can be avoided when the two interconnected caused due to the internal network address
C. make use NAT after art, outsiders can not get information on the internal network
D. make use NAT after technologies, network users access the network service availability affected
正解：A,B,C,D

質問 3：
Configure the following commands on the MSR router:
qos pql 1 protocol-ip-tcp1000 queue-top
qos pql 1 protocol-ip-tcp1001 queue-middle
qos pql 1 protocol-ip-tcp1002queue-normal
qos pql 1 protocol-ip-tcp1003 queue-bottom
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos lr outbound cir 10000 cbs 625000 ebs 0
qos pq pql 1
qos rtpq start-port 16384 end-port 32767 bandwidth 1000 cbs 25000
Then when the destination port are 1000 , 1001 , 1002 and 1003 of the TCP packet and matching with RTPQ the flow rates of at 4Mbps speed feed into the MSR , and from the side port G0 / 1 forwarding, the following statements is correct is ______
A. Head of port 1003 of TCP packet forwarding rate is 0
B. Head of port 1001 of TCP packet forwarding rate is 4Mbps
C. The forwarding rate of RTPQ traffic packets is about 1Mbps
D. Head of port 1000 of TCP packet forwarding rate to 3Mbps
E. Head of the port 1002 of TCP packet forwarding rate is 2.4Mbps
正解：A,B,C

質問 4：
Which of the following descriptions about the structure of SIP messages are correct ?
A. The some SIP message contains one or more message header, used to identify the type of message
B. There are some special SIP response messages without a start line
C. elimination main message body content of the message is a description of the session to be set up, some special SIP message without the message body
D. Since the start line, the message header, the message body is a SIP basic components message lacks any part of the SIP message is illegal cancellation message
正解：C

質問 5：
In the PPPoE application of ADSL , when the CPE side uses the MSR router + ADSL interface card for networking, and the CO side DSLAM uses ATM for uplink, which interfaces need to be PPPoE- related on the CO side centralized router ( PPPoE Server ) Configuration ?
A. ATM interface
B. Yi Tai Ethernet port
C. Virtual-Template
D. dial number Interface
E. Virtual-Ethernet
正解：A,C,E

質問 6：
Which of the following statements about VPNv4 addresses is correct is _______ .
A. VPNv4 addresses have more RD prefixes than IPv4 addresses
B. In BGP MPLS VPN group network, a public network forwarding the packet destination address is VPNv4 address
C. VPNv4 address will not appear in user data packets
D. VPNv4 address length is 96bit
正解：A,C

質問 7：
When SIP-UA calls the called party through the proxy server, ____ .
A. Lord called UA All messages are forwarded through a proxy server
B. to the not right
C. In addition to the external location request message, the calling UA other messages need not be forwarded through a proxy server
D. In this environment, the called UA response message is sent instead of the main junction proxy called UA
正解：A,D

質問 8：
An operator hopes to deploy ADSL ( ADSL2 ) to kill the system in a community with relatively dense users and short transmission distance .Users do not require high bandwidth, and pay more attention to its economy and ease of installation and maintenance.
Based on the above requirements, when choosing ADSL ( ADSL2 ) standard, the ideal is ____ .( Choose one or more )
A. ITU 992.2
B. ITU 992.3
C. ITU 992.1
D. ITU 992.4
正解：A,D