[Feb-2022] H3C GB0-391 Exam: Basic Questions With Answers
New 2022 Realistic Free H3C GB0-391 Exam Dump Questions & Answer
NEW QUESTION 46
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 _____
- A. The forwarding rate of packets with the source address of 192.168.0.2 is about 4Mbps
- B. The forwarding rate of packets with the source address of 192.168.2.2 is about 4Mbps
- C. The forwarding rate of packets with the source address of 192.168.2.2 is about 3Mbps
- D. The forwarding rate of packets with the source address of 192.168.2.2 is about 2.4Mbps
- E. The forwarding rate of packets with the source address of 192.168.0.2 is about 3Mbps
- F. The forwarding rate of packets with the source address of 192.168.0.2 is about 2.4Mbps
Answer: A,B,C,E
NEW QUESTION 47
In VoIP networks, the bandwidth saved by VAD technology is related to which of the following factors ?
- A. mesh network congestion degree
- B. selected by signaling type
- C. selected encoding type used
- D. said language and characteristics of the speaker
Answer: C,D
NEW QUESTION 48
In the EPCN network as shown in the figure , when sending data from CLT to users 1 , 2 , 3 , which of the following statements is correct?
- A. CNU1 will receive packages 1 , 2 , and 3 and send them all to the end user 1
- B. CNU1 will receive packets 1 , 2 , and 3 , but it will only send packet 1 to end user 1 , and discard packets 2 and 3
- C. terminating end user 1 will only receive the packet 1
- D. terminating end user 1 receives packet 1 , 2 , 3 , but it accepts only the packet 1 , the packet is discarded 2 and packages 3
- E. CNU1 will only receive package 1
Answer: B,C
NEW QUESTION 49
It can be judged that this is a technical application based on the networking shown in the figure and the following configuration.
RTA:
[RTA] ike peer 123
[RTA-ike-peer-123] pre-shared-ke simple 123
[RTA-ike-peer-123] remote-address 100.1.1.2
.......<-i
IRTA-ike-peer-123] local-address 100.1.1.1
[RTA-ike-peer-123]quit
[RTA] ipsec proposal 1
IRTA-ipsec-propos al-l]quit
[RTA]acl number 3000
[RTA-acl-adv-3000] rule 0 permit ip source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
[RTA]ipsec polic 1 1 isakmp
[RTA-ipsec-polic-isakmp-ll] securit acl 3000
[RTA-ipsec-polic-isakmp-ll] ike-peer 123
[RTA-ipscec-polic-isakmp-ll] proposal 1
[RTA-ipsec-polic-isakmp-ll] quit
[RTA] interface EthernetO/1/1
[RTA-Ethernet0/1/1] ip address 10.1.1.1 255.255.255.0
[RTA] interface EthernetO/l/0
[RTA-Ethernet0/1/0] ip address 192.168.1.1 255.255.255.0
[RTA] interface Loopback0
[RTA-LoopbackO]ip address 1.1.1.1 255.255.255.255
[RTA] interface Tunnel 1
[RTA-Tunnel1]source 1.1.1.1
[RTA-Tunnel1]destination 2.2.2.2
[RTA-Tunnell]ip address 100.1.1.1 255.255.255.0
[RTA-Tunnel1]keepalive
[RTA-Tunnell]ipsec polic 1
[RTA] ip route-static 2.2.2.2 255.255.255.255 10.1.1.2
[RTA] ip route-static 192.168.2.0 255.255.255.0 100.1.1.2
RTB:
[RTB] ike peer 123
[RTB-ike-peer-123] pre-shared-ke simple 123
[RTB-ike-peer-123] remote-address 100.1.1.1
[RTB-ike-peer-123] local-address 100.1.1.2
[RTB-ike-peer-123]quit
[RTB] ipsec proposal 1
[RTB-ipsec-proposal-l] quit
[RTB]acl number 3000
[RTB-acl-adv-3000] rule o permit ip source 192.168.2.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
[RTB]ipsec polic 1 1 isakmp
[RTB-ipsec-polic-isakmp-ll] securit acl 3000
[RTB-ipsec-polic-isakmp-ll] ike-peer 123
[RTB-ipsec-polic-isakmp-ll] proposal 1
[RTB-ipsec-polic-isakmp-ll] quit
[RTB] interface Ethernet0/1/1
[RTB-Ethernet0/1/1] ip address 10.1.1.2 255.255.255.0
[RTB] interface Ethernet0/1/0
[RTB-Ethernet0/1/0] ip address 192.168.2.1 255.255.255.0
[RTB] interface Loopback0
[RTB-Loopback0] ip address 2.2.2.2 255.255.255.255
[RTB] interface Tunnell
[RTB-Tunnell]source 2.2.2.2
[RTB-Tunnell]destination l.1.1.1
[RTB-Tunnell]ip address 100.1.1.2 255.255.255.0
[RTB-Tunnell]keepalive
[RTA-Tunnell]ipsec polic 1
[RTB] ip route-static l.1.1.1 255.255.255.255 10.1.1.1
[RTB] ip route-static 1 92.1 68.1.0 255.255.255.0 1 00.1.1 .1
- A. IPSec over L2TP
- B. GRE over IPsec
- C. IPSec over GRE
- D. L2TP over IPsec
Answer: C
NEW QUESTION 50
Regarding the echo in the VoIP telephone system, which of the following descriptions are correct ?
- A. 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.
- 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. 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.
- 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: A,D
NEW QUESTION 51
Which of the following descriptions about GRE VPN configuration is correct is ____ .( Choose one or more )
- A. After the keepalive function is enabled on the tunnel interface , by default, once the router fails to receive the keepalive message from the other party for three times , the tunnel is considered unavailable
- B. with home GRE VPN when, regardless of static routing or dynamic routing, the Tunnel interfaces should start Keepalive function, to detect the actual work of the tunnel interface
- C. Tunnel source address and a destination address uniquely identifies an interface of a tunnel, at the ends of the tunnel Tunnel source address and destination address from the interface must be the same
- D. lack of provincial case, the Tunnel Interface packet encapsulation mode as GRE
Answer: A,D
NEW QUESTION 52
The encapsulation format of the voice data transmitted in the VoIP network data is ______ .
- A. IP| Voice Data
- B. IP|UDP|RTP| Voice data
- C. IP|TCP |RTP| voice data
- D. IP|UDP|RTCP|RTP| Voice data
Answer: B
NEW QUESTION 53
When the link type of the ONU port is Access , its processing method for the upstream message is ____ .
- A. only allowed with a tag messages by
- B. for without receipt of the Tag message, add the default VLAN tag , to receive with tag packets forwarded directly
- C. only allowed without belt tag packets through, and packets add the default VLAN 's tag
- D. Only the packets with the default VLAN tag are allowed to pass and go to the tag
Answer: C
NEW QUESTION 54
Among the packets encapsulated by the GRE protocol, the payload protocol is the IPX protocol, and the bearer protocol is the IP protocol.The encapsulation sequence of the packet from the link layer to the payload data is the link layer ____GRE____ payload data.
- A. IPX , IPX
- B. IP , IP
- C. lP , IPX
- D. IPX , IP
Answer: C
NEW QUESTION 55
a H.323 gateway receives when registering with the gatekeeper RRJ message stating
- A. network gatekeeper registration request is being processed gateway
- B. network related parameters transmitted error
- C. Net observe accepted the registration of the gateway
- D. network gatekeeper refused to register the gateway
Answer: D
NEW QUESTION 56
According to Nquist 's theorem, the telephone system samples human voices every second to satisfy the complete representation of the characteristics of the voice signal.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 57
SSL ( Securit Sockets Laer , Secure Sockets Layer ) protocol handshake layer which includes several of the following protocol modules ?
- A. shake hands Agreement
- B. will then maintenance agreement
- C. secret key change protocol
- D. told police protocol
Answer: A,C,D
NEW QUESTION 58
by the security gateway device displa ipsec sa command displays the following order information, the information is understood by ______ .
Interface: Serial0/2/1 path MTU: 1500
---------------- -------------
IPsec polic name: "1"
sequence number: 1
mode: isakmp
-----------------------------
connection id: 5
encapsulation mode: transport
perfect forward secrec: None
tunnel:
local address: 10.2.1.1
remote address: 10.2.1.2
Flow:
sour addr: 10.1.1.0/255.255.255.0 port: 0 protocol: IP
dest addr: 10.3.1.0/255.255.255.0 port: 0 protocol: IP
[inbound ESP SAs]
spi: 909448761 ( 0x36351639 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
spi: 909448761 ( 0x36351639 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
max received sequence-number: 19
udp encapsulation used for nat traversal: N
[outbound ESP SAs]
spi: 1583842120 ( 0x5e678348 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
max sent sequence-number: 20
udp encapsulation used for nat traversal: N
- A. This security policy requires manual configuration of parameters such as keys, SPI , security protocols and algorithms
- B. This security policy works in transmission mode
- C. This security policy requires the use of IKE dynamic negotiation key, SPI , security protocol and algorithm and other parameters
- D. This security policy work in tunnel mode
Answer: C,D
NEW QUESTION 59
The functions supported by RAS signaling are ______
- A. predetermined bit requests
- B. Note Book
- C. like state indication
- D. GK Discovery
- E. band width request
- F. access the request
Answer: A,B,C,D,E,F
NEW QUESTION 60
In the MSR router configuration command is as follows:
acl number 2001
rule o permit source 19 2.168.2.0 0.0.0.255
acl number 2002
rule o permit source 192.168.3.0 0.0.0.255
acl number 2003
rule o permit source 192.168.0.0 0.0.0.255
#
traffic classifier 2 operator or
if-match acl 2001
if-match classifier 1
traffic classifier 1 operator and
if-match acl 2002
if-match acl 2003
#
traffic behavior 2
filter deny
#
qos polic 2
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos appl polic 2 0utbound
When the source address are 192.168.2.2.192.168.3.2.192.168.0.2 packets from the port G0 / 1 forwarding outwardly, the following statement is correct ____ .
- A. Packets with the source address of 192.168.0.2 are forwarded normally
- B. Packets with the source address of 192.168.2.2 are forwarded normally
- C. Packets with source address 192.168.3.2 are forwarded normally
- D. three message by the flow are blocked
Answer: A,C
NEW QUESTION 61
How do you view PE device learns to BGP private network routes _______ .
- A. displa bgp vpnv4 all routing-table
- B. displa mp-bgp r outing-table
- C. displa bgp vpnv4 routing-table
- D. displa bgp routing-table
Answer: A
NEW QUESTION 62
Which of the following command to check MPLS LDP 's Session whether to establish complete ?
- A. displa mpls ldp lsp
- B. displa mpls ldp
- C. displa mpls ldp session
Answer: C
NEW QUESTION 63
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 -> public network IP header ->L2TPT header
- B. Private network data packet ->PPP header ->L2TPT header ->UDP header -> Public network IP header
- C. Private network data packet ->PPP header ->UDP header ->L2TPT header -> Public network IP header
- D. Private network data packet ->L2TPT header ->PPP header ->UDP header -> public network IP header
Answer: C
NEW QUESTION 64
Which of the following statements about SSL VPN deployment is correct is ______ .
- A. If only part of the network traffic in the intranet needs to be protected, a dual-arm deployment method is required
- B. Double arm deployment is used in SSL VPN gateway with firewall integrated networking
- C. In order to avoid a single point of failure of SSL VPN from affecting network connectivity, dual-arm deployment is required
- D. If the internal network needs to be fully protected, a dual-arm deployment method is required
Answer: B,D
NEW QUESTION 65
A PBX of a company in Beijing was originally connected to the operator's telephone network through an analog line, using a total of 18 analog lines.In order to reduce maintenance complexity, it is proposed to apply for a digital line from the operator. ______ is the most economical choice.
- A. ATM
- B. E&M
- C. T1
- D. E1
Answer: D
NEW QUESTION 66
In the H.323 call flow, if two terminals registered to the same gatekeeper adopt the direct call mode, then
- A. Messages such as Setup and Connect are directly exchanged between the two terminals
- B. to the answers are right
- C. Messages such as ARQ and ACF are directly exchanged between the two terminals
- D. H.245 capability negotiation is completed directly between two terminals
Answer: A,D
NEW QUESTION 67
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