[Jan-2022] The Best H3CSE-Routing & Switching Study Guide for the GB0-391 Exam
GB0-391 certification guide Q&A from Training Expert Prep4King
NEW QUESTION 108
When the user uses the phone, after the telephone handle of the room starts to input the called number, which of the following signaling does the ringing of the called phone belong to ____ ?
- A. monitoring tube signaling
- B. letter information signaling
- C. Call call signaling
- D. to address signaling
Answer: B
NEW QUESTION 109
Factors that affect VoIP voice quality include ______ .
- A. choose a type of numbering
- B. back sound
- C. selected by signaling type
- D. Packet loss on IP network
Answer: A,B,D
NEW QUESTION 110
In ADSL of PPPoE applications, when the CPE side using MSR router + ADSL interface card for networking, co side DSLAM make use IP rows on the co centralized router side ( PPPoE Server ) need to be on which interfaces PPPoE relevant The configuration ?
- A. Virlual-Ethernet
- B. ATM interface
- C. Virtual-Template
- D. dial number Interface
- E. Yi Tai Ethernet port
Answer: C,E
NEW QUESTION 111
Regarding the echo in the VoIP telephone system, which of the following descriptions are correct ?
- A. speech voice gateway device when performing analog to digital conversion may introduce echo, an echo suppression function but can be configured to reduce the impact on the voice gateway.
- B. In VoIP networks, echo is related to the choice of encoding.The greater the compression ratio, the greater the relative echo in the network.
- C. language voice gateway equipment itself does not bring new echo, but the IP network to bring network latency, increasing the echo time delay, leading to the original feel of the echo in VoIP become energy network The echo of being felt.
- D. back sound into electrical echo and acoustic echo, electrical echo conventional telephone systems is mainly due to two, four-wire transducer impedance mismatch caused by
Answer: C,D
NEW QUESTION 112
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. 30%
- B. feature set error
- C. 20%
- D. 10%
- E. 40%
Answer: E
NEW QUESTION 113
Which of the following parameters will not be included in an MP-BGP routing message
- A. Private network label
- B. RT 's Emport Target property
- C. RT 's Import Target attribute
- D. RD front stage
Answer: A,B,C
NEW QUESTION 114
Which of the following statements about SSL VPN deployment is correct is ______ .
- A. If the internal network needs to be fully protected, a single-arm deployment method is required
- B. If only part of the network traffic in the intranet needs to be protected, a dual-arm deployment method is required
- C. Double arm deployment is used in SSL VPN gateway with firewall integrated networking
- D. In order to avoid a single point of failure of SSL VPN from affecting network connectivity, a single-arm deployment method is required
Answer: C,D
NEW QUESTION 115
The following options belong to the co- side equipment is ____ .
- A. access the server
- B. DSLAM
- C. access into the switch
- D. cable modem
- E. machine top box
Answer: A,B,C
NEW QUESTION 116
The calling UA sends a request message and receives a 200 OK response from the called UA .How can the calling UA cancel the request ?
- A. No law have requested revocation
- B. Li ie the called UA sent Back message
- C. Li ie the called UA sent BE message
- D. Li ie the called UA send Cancel message
Answer: A
NEW QUESTION 117
Which of the following statements about SSL VPN access control is correct is ______ .
- A. dynamic state does not require authorization client terminal installs
- B. static state authorized authentication including local and external authentication certification in two ways
- C. dynamic state authorization authorization and security policy is still the intersection of authorization
- D. dynamic state authorization is not required to create a security policy
Answer: B,C
NEW QUESTION 118
IP header ToS field provides a ______ one IP Precedence priority.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 119
BGP MPLS VPN on a network station of the public network equipment, displa mpls ldp lsp command command checks its label forwarding table, the following results described _______ .
[PE1] dis mpls ldp lsp
LDP LSP Information
----------------------------------- --------------- ----------------------- --------------------------- ------------
SN DestAddress/Mask In/OutLabel Next-Hop In/Out-Interface
-------------------------------------------------- ------------------------------- ------------------- -------------
1 1.1.1.1/32 3/NULL 127.0.0.1 Eth0/0/InLoop0
2 1.1.1.2/32 NULL/1024 100.0.0.2 ---------Eth0/0
3 1.1.1.3/32 NULL/3 100.0.0.2 ---------Eth0/0
- A. needle of 1.1.1.2/32 the FEC, the label on the device 1024
- B. needle to 1.1.1.2/32 the FEC, the device is the penultimate hop
- C. needles of 1.1.1.2/32 the FEC, the label on the device 1024
- D. needle to 1.1.1.2/32 the FEC, the device is the penultimate hop
Answer: B,C
NEW QUESTION 120
Which of the following statements about EPCN are correct?
- A. EPCN is an active EoC technology, and the user terminal is an active device, thus avoiding the limitation of the network topology without passive EoC technology.
- B. EPCN is a passive EoC technology.The user terminal is a passive device, and the system transmission loss tolerance is low, which limits its application scope to a certain extent.
- C. EPCN system main memory deployment coaxial cable distribution network portion of the network, the HFC backbone mainly EPON technology fit therewith.
- D. EPCN conforms to HFC- based broadband access specifications such as DOCSIS 1.0/1.1/2.013.0 .
Answer: A,C
NEW QUESTION 121
What fields does MPLS label have ?
- A. S
- B. Label
- C. TTL
- D. EXP
Answer: A,B,C,D
NEW QUESTION 122
xz company requires to build its network based on modular enterprise network architecture. Z company in Shenzhen and Xi'an with 1 R & D base, with an office in Beijing and Shanghai ; at 23 with more than capital cities 50 person office ; the 200 has no more than smaller cities 8 people in a small office j There are usually more than 200 market and technical personnel on business trips at any given time .Due to environmental and cost issues, some offices cannot access the headquarters through dedicated lines or packet-switched wide area network connections.According to these circumstances, the network module that Z company should have is ____ .
- A. Large type branch network
- B. far away / distributed office network
- C. VPN access into
- D. dedicated line / packet switched access
Answer: C,D
NEW QUESTION 123
The following commands are configured on the MSR router:
acl number 3000
rule o permit ip source 100.0.10
acl number 3002
rule o permit ip source 100.0.0.0.0.0.0.255
interface GigabitEthemet0/1
port link -mode-route
jp.address 200.0.0.1255.255.255.0
qos gts acl 3002 cir 200 cbs 12500 ebs o queue-length50
qos gts acl 3000cir 100 cbs 6250 ebs o queue-length50
Then when the port G0/1 forwards packets with the source IP address of 100.0.0.1 in the outbound direction , which of the following statements is correct ( choose one or more )
- A. portions partial misconfigured
- B. the flow amount is less than 100kbps forwarded when
- C. flow is greater than 100bkps , less than 200kbps , the normal forwarding
- D. stream is greater than 200kbps , the packet shaping to 100kbps forwarded
- E. flow greater than 100kbps , the less than 200kbps instant message shaping to 100kbps forwarded
- F. stream is greater than 200kbps , the packet shaping to 200kbps forwarded
Answer: B,D,E
NEW QUESTION 124
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