Latest [Sep 05, 2021] H3C GB0-391 Exam Practice Test To Gain Brilliante Result
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NEW QUESTION 181
The following commands are configured on an interface of the router:
qos car inbound an cir 1000 cbs 62500 ebs 0 green remark-dscp-pass ef red remark-dscp-continue af13
When the port receives packets, the following statement is correct _____
- A. When the received message is greater than the rate of 1000kbps , the burst can be 62500 bytes than 1000kbps packets DSCP value is marked as AF13 , straight forward next CAR policy processing
- B. When the received packet rate is less than 1000kbps , the packet DSCP value is marked as EF and then forwarded
- C. When the received message rate is less than 1000kbps , after the DSCP value of the message is marked as EF , it is forwarded to the next CAR policy for processing and forwarding
- D. When the received message rate is less than 1000kbps , it can burst 62500 bytes, and the DSCP value of the message exceeding 1000kbps is marked as af13 and forwarded directly
- E. When the received message rate is less than 1000kbps , the message will be forwarded normally without any processing
Answer: A,B
NEW QUESTION 182
In the VoIP network, the bandwidth saved by VAD technology has nothing to do with which of the following solid elements
- A. selected encoding type used
- B. selected by signaling type
- C. said language and characteristics of the speaker
- D. mesh network extent owned room
Answer: B,D
NEW QUESTION 183
Downstream LSR devices Label mapping cancellation message to its FEC assigned ______ released to the upstream LSR .
- A. Outbound interface information
- B. a tag ( OUT the Label ) information
- C. to all information
- D. the label ( the IN the Label ) information
Answer: D
NEW QUESTION 184
If the user configures the packet filtering strategy incorrectly and filters all TCP packets, what happens to the call in the H.323 network ?
- A. that a call will be discontinued in H.245 stage
- B. Does not affect calls between terminals
- C. that a call will be discontinued in Q .Stage 931
- D. that a call will be discontinued in RAS stage
Answer: C
NEW QUESTION 185
In L2TP VPN , LAC ( LATP Access Concentrator , L2TP access concentrator ) receives the IP data packet sent from the remote system to the server , and needs to encapsulate the data packet and send it to LNS ( L2TP Network Server , L2TP) Network server ) , the encapsulation format of the data packet transmitted between LAC and LNS is
- A. Private network data packet ->PPP header ->UDP header ->L2TPT header -> Public network IP header
- B. Private network data packet ->PPP header ->UDP header -> public network IP header ->L2TPT header
- C. Private network data packet ->PPP header ->L2TPT header ->UDP header -> Public network IP header
- D. Private network data packet ->L2TPT header ->PPP header ->UDP header -> public network IP header
Answer: A
NEW QUESTION 186
The main functions of LNS and LAC in L2TP components are ____ .( Choose one or more )
- A. LNS will L2TP encapsulate the message received from the remote system ( Remote system ) and send it to LAC
- B. LAC can exist on a remote system
- C. LNS and LAC jointly maintain L2TP tunnels
- D. LNS can exist on the remote system
Answer: B,C
NEW QUESTION 187
In the BGP MPLS VPN networking, the correct statement about the relationship between labels is _______ .
- A. Between public network devices, private network packets usually have two layers of MPLS labels, of which the outer layer is the public network label
- B. Between PE and CE devices, private network packets have only one MPLS label, which is a private network label
- C. MPLS After enabling the penultimate hop, the penultimate and final message hop between public network equipment is only one layer MPLS label, private label is
- D. Private network labels cannot be identified on all PE and P devices
Answer: A,C
NEW QUESTION 188
In the H.323 call flow, if two terminals registered to the same gatekeeper use the direct call mode, then
- A. Messages such as Setup and Connect are directly exchanged between the two terminals
- B. H.245 capability negotiation is completed directly between two terminals
- C. Messages such as ARQ and ACF are directly exchanged between the two terminals
- D. to the answers are right
Answer: A,B
NEW QUESTION 189
When the link type of the ONU port is Trunk , its processing method for upstream packets is _____ .
- A. Only allow tagged messages to pass
- B. Only allow the packets with the default LAN Tag to pass and go to the tag
- C. for without receipt of the Tag message, add the default VLAN Tag ; for received with Tag packets forwarded directly
- D. only allowed without Tag packets to pass through, and the packets add the default VLAN of Tag
Answer: C
NEW QUESTION 190
As the client, the PC uses the client LAC mode to establish an L2TP tunnel through the iNode and the LNS , and prompts that the acquisition of the lP is overtime.The possible cause of this problem is ____ .( Choose one or more )
- A. Incorrect username and password on iNode
- B. LNS to LAC authentication fails
- C. Tunnel interface verification fails
- D. IP address pool configuration error
Answer: D
NEW QUESTION 191
Which of the following are signaling _____ .
- A. by the user using the phone, pick up the telephone handset called number, the called telephone ringing
- B. 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.
- C. by the user using the phone, pick up the telephone handset called number, outgoing echo from handset bell
- D. by the user when using the phone, pick up the telephone handset, the handset came from the dial tone.
Answer: A,C,D
NEW QUESTION 192
Which of the following descriptions about L2TP tunnel ( Tunnel ) and L2TP session ( Session ) are correct is ____ .( Choose one or more )
- A. The L2TP session must be carried out after the L2TP tunnel is established
- B. will identify the session ( the Session ID ) is not the same message can reuse the same tunnel
- C. will identify the session ( the Session ID ) is not the same message can not reuse the same tunnel
- D. L2TP session can be carried out before L2TP tunnel is established
Answer: A,B
NEW QUESTION 193
The content that traffic management needs to pay attention to are _____ .
- A. What is the percentage of bandwidth occupied by various uses at the exit?
- B. How much traffic is on each link
- C. net peak and average in all types of network traffic
- D. Net network traffic in time how the distribution of each type of business
Answer: A,B,C,D
NEW QUESTION 194
In the BGP MPLS VPN networking, which of the following locations will the RD prefix exist ______ .
- A. In the private network packet forwarded by the PE to the P device
- B. In the private network packet forwarded by PE to CE
- C. In the routing update message exchanged between PEs
- D. In the route cancellation message exchanged between PEs
Answer: C,D
NEW QUESTION 195
Which of the following descriptions about the structure of SIP messages are correct ?
- A. There are some special SIP response messages without a start line
- B. 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 message
- 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. The some SIP message contains one or more message header, used to identify the type of message
Answer: C
NEW QUESTION 196
The following regarding L the SR provided label switched on for the apparatus ( the SWAP ) operation statement is correct _______ .
- A. When the message arrives at the LSR , compare the MPLS label value carried in the message with the out-label entry in the label forwarding table
- B. When the message arrives at the LSR , compare the MPLS label value carried in the message with the incoming label entry in the label forwarding table
- C. When the message arrives at the LSR , the MPLS label value carried in the message is changed to the out label of the corresponding label forwarding entry
- D. When the message arrives at the LSR , the MPLS label value carried in the message is changed to the incoming label of the corresponding label forwarding entry
Answer: B,C
NEW QUESTION 197
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