Download Free H3C GB0-391 Real Exam Questions Download [Q220-Q239]

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Download Free H3C GB0-391 Real Exam Questions Download

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NEW QUESTION 220
Which statement about VoIP voice transmission is correct?

needed to TCP to provide reliability mechanisms

need to RTP to provide re-ordering mechanism

needs to RTP provides a time stamp mechanism

need to UDP provides multiplexing mechanism

NEW QUESTION 221
In the process of issuing the digital certificate application in the void, the PKI ( Public Infrastructure Ke , public key systems ) role of the various components were _____ .

real body wishes to obtain a digital certificate, first of all to RA ( Registration Authority ) apply, RA after the audit entity identity, the identity of the entity and the public key information is sent to a digital signature to the CA ( Certificate Authority )

After the CA verifies the digital signature, it agrees to the entity’s application and issues a certificate for the entity

The CA sends the issued certificate to the LDAP server to provide directory browsing services

real- time body want to revoke the certificate, the RA ( Registration Authority ) submit an application

NEW QUESTION 222
In the private network routing table of the PE equipment, the next hop of the remote user’s private network route is ______ .

distal end CE of the loopback interface address

distal end of the PE and CE interface address connected

distal end PE of the loopback interface address

present P E of loopbac K interface address

NEW QUESTION 223
In ADSL of PPPoE applications, when the CPE side using MSR router + ADSL interface card for networking, CO.’S side DSLAM using ATM uplink time, deposit CPE needs to interface on the router which side ( irrespective CPE side LAN Connection ) ?

DSL interface

Yi Tai Ethernet port

Virtual-Ethernet

Virtual-Template

dial number Interface

NEW QUESTION 224
About MPLS label to sign in S description field of the right is _______ .

S used to identify the presence or absence in the MPLS nested label, a packet can have more than one MPLS label

S is 0 indicates that the MPLS standard tab first, last a MPLS label, followed by a MPLS packet payload

S is 1 indicates that the MPLS label one last a th MPLS label, followed by a MPLS packet payload

S word segment only .1 th bit

NEW QUESTION 225
The following belongs to the asymmetric key algorithm is ____ .

RSA

DSA

DES

NEW QUESTION 226
If each of the teams it corresponds to a type of packets, the transmission ratio of the amount of each queue is sequentially increased, both 1: 2: 3: …: most large number of queues, assume that the application speed of the schedule port If it is 100Mbps , then when each queue corresponds to a message that is forwarded at a speed of 20Mbps after the port is congested.Of 7 broadband packet queue corresponds may be used about as ______

4.61%

5.14%

5.26%

5.88%

NEW QUESTION 227
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 ____

802.1p

IP Precedence

DSCP

number of source data streams / object IP address, port number, protocol type pentad

NEW QUESTION 228
In the VoIP network, which of the following factors has nothing to do with the bandwidth saved by VAD technology ?

selected encoding type used

mesh network congestion degree

selected by signaling type

said language and characteristics of the speaker

NEW QUESTION 229
The ZLB ( Zero-Length Bod ) message is a control message with only an L2TP header, and its function is to serve as an explicit response to ensure reliable delivery of the control message.
In the following four cases, LNS does not send ZLB message to LAC as a response: ____ .

the LNS received LAC transmit the CDN ( Call-Disconnect- Notif , call disconnection notification ) after the message

After LNs receive the ICCN ( Incoming-Call-Connectea , call connected ) message sent by LAC

After the LNS receives the Hello control message sent by the LAC

LNS receives StopCCN ( scop-Control-Connection-Notiflcation ) sent by LAC ; after the message

NEW QUESTION 230
The information displayed on the MSR router is as follows:
acl number 2000
rule 0 permit source 192.168.0.0 0.0.0.255
acl number 2002
rule 0 permit source 192.168.2.0 0.0.0.255
#
traffic classifier 2 operator and
if-match acl 2002
traffic classifier 1 operator and
if-match acl 2000
#
traffic behavior 2
queue af bandwidth pct 30
traffic behavior 1
queue ef bandwidth pct 30 cbs-ratio 25
#
qos polic test
classifier 1 behavior 1
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
duplex full
speed 10
ip address 192.168.1.1 255.255.255.0
qos appl polic test outbound
When the traffic rate of the packets with the source addresses of 192.168.0.2 , 192.168.2.2 , and 192.168.3.2 are 4Mbps , 4Mbps , 6Mbps , and no other background traffic is forwarded from port G0/1_ .
Then the following statement is correct _____

The forwarding rate of packets with the source address of 192.168.0.2 is about 4Mbps

The forwarding rate of packets with the source address of 192.168.0.2 is about 3Mbps

The forwarding rate of packets with the source address of 192.168.0.2 is about 1.5Mbps

The forwarding rate of packets with the source address of 192.168.2.2 is about 4Mbps

The forwarding rate of packets with the source address of 192.168.2.2 is about 3Mbps

The forwarding rate of packets with the source address of 192.168.2.2 is about 1.5Mbps

NEW QUESTION 231
To clear the secure tunnel established by ike , which of the following commands should be used ?

reset ike

reset ike tunnel

reset ipsec sa

reset ike sa

NEW QUESTION 232
The main functions of LNS and LAC in L2TP components are ____ .( Choose one or more )

LAC L2TP encapsulates the message received from the remote system and sends it to LNS

The L2TP tunnel is mainly maintained by the LAC

LAC and LNS can be the same device

LAC and LNS are the end points of L2TP sessions

NEW QUESTION 233
In the GRE Tunnel interface view, configure the sending period of Keeplive packets to 10s , and determine the number of transmissions of Keeplive packets required for tunnel interruption to 3 , and the command is ____ .

keepalive 10 3

keepalive 3 10

keepalive-interval 10

keepalive-times 3

NEW QUESTION 234
In FIG illustrated EPON networking, the OLT to the network all the ONU ( the ONU1 to ONUn ) to transmit data, the following statements is correct is ____ .( Choose one or more )

Line Road 0 have all the ONU data

Line Road 1 on which all the ONU data

wire passage 2 is only to ONU2 data

Line Road 0 ~ n- downlink data is the same

NEW QUESTION 235
The changes of MP-BGP protocol relative to BGP protocol include

The new increase MP REACH NLRI attribute

The new increase MP UNREACH NLRI attribute

The new increase Extended Communities attribute

new growth VPNv4 address family

NEW QUESTION 236
Which of the following factors will not affect VoIP voice quality____

selected encoding type used

Packet loss on IP network

selected by signaling type

back sound

NEW QUESTION 237
The encapsulation format of the voice data transmitted in the VoIP network data is ______ .

IP|UDP|RTP| Voice data

IP|TCP |RTP| voice data

IP| Voice Data

IP|UDP|RTCP|RTP| Voice data

NEW QUESTION 238
IPSec polic is configured between the two routers , after the policy is issued to the corresponding interface, the ping command is used to check the interoperability of the protected data flow, and it is found that the data passes 100% .Using the displa ike sa and displa ipsec sa commands, the IPSec SA is not established.
The reason for the failure of IPSec configuration is ____ .( Choose one or more )

The tunnel mode is used in the IPSec proposal , and the protected data flow is data from network segment to network segment

make use the IKE aggressive mode

ACL configuration is incorrect

The pre-shared-ke configuration of IKE does not match

NEW QUESTION 239
The information displayed on the MSR router is as follows:
acl number 2000
rule 0 permit source 192.168.0.0 0.0.0.255
acl number 2002
rule 0 permit source 192.168.2.0 0.0.0.255
#
traffic classifier 2 operator and
if-match acl 2002
traffic classifier 1 operator and
if-match acl 2000
#
traffic behavior 2
queue af bandwidth pct 30
traffic behavior 1
queue ef bandwidth pct 30 cbs-ratio 25
#
qos polic test
classifier 1 behavior 1
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
duplex full
speed 10
ip address 192.168.1.1 255.255.255.0
qos appl polic test outbound
When the traffic rate of the packets with the source addresses of 192.168.0.2 , 192.168.2.2 , and 192.168.3.2 are 4Mbps , 4Mbps , 6Mbps , and no other background traffic is forwarded from port G0/1_ .Then the following statement is incorrect is _____