合格させる試験完全版GB0-191-ENU問題集434解答
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質問 103
The interface information of a router is displayed as follows:
Serial0/0 current state: UP
Line protocol current state: DOWN
Physical layer is synchronous, Baudrate is 64000 bps
Interface is DCE, Cable type is V35, Clock mode is DCECLK
What kind of protocol may be encapsulated or run on this interface?
- A. Frame Relay
- B. RIP
- C. PPP
- D. None of the above answers are correct
- E. HDLC
正解: A,B,C,E
質問 104
There are two hops from the source device to the destination device. Use the tracert command to detect the path. When detecting the first hop, the source device sends a UDP packet with a TTL of 1 to the middle hop; when detecting the second hop, the source device sends a UDP packet with a TTL of 2, and the packet reaches the middle hop first, and the TTL is decremented When the message reaches the destination, the TTL will be decremented to 0. At this time, the destination device will send an ICMP_____ message to the source to inform the source device that it has tracked the destination address.
- A. Echo Request
- B. Time Exceeded
- C. Echo Reply
- D. Port Unreachable
正解: D
質問 105
Which of the following statements about optical fiber are correct? (multiple choice)
- A. When using multi-mode fiber, the maximum signal transmission distance is longer than single-mode fiber
- B. Multimode fiber has a thinner core
- C. The cost of multimode fiber is lower than that of single mode fiber
- D. Multimode fiber can transmit light of different wavelengths and different incident angles
正解: C,D
質問 106
Which of the following statements about MAC addresses are wrong? (multiple choice)
- A. The MAC address is solidified in ROM and cannot be changed under normal circumstances
- B. MAC address is a logical address that is easy to change
- C. Usually only terminal hosts need MAC addresses, routers and other network devices do not need
- D. Ethernet uses MAC address to identify host
正解: B,C
質問 107
The WAN link between the two routers MSR-1 and MSR-2 uses the PPP protocol. The two ends learn each other's routes by configuring RIP. Currently, the route learning is normal. Now the following commands are added to the RIP configuration of MSR-1:
[MSR-1-rip-1] silent-interface all
So ______ . (Multiple choice)
- A. This command makes all interfaces of MSR-1 only send routing updates and not accept routing updates
- B. This command makes all interfaces of MSR-1 only receive routing updates without sending routing updates
- C. After configuring this command, the RIP route in the MSR-2 routing table disappears immediately
- D. After configuring this command, the RIP route in the MSR-1 routing table disappears immediately
正解: B
質問 108
The equipment that realizes network interconnection at the network layer is ______.
- A. Switch
- B. Router
- C. Hub
- D. Repeater
正解: B
質問 109
The default data transfer port used by FTP is ______.
- A. 0
- B. 1
- C. 2
- D. 3
正解: D
質問 110
An empty-configured MSR router connects to the frame relay network through interface S1/0.
To achieve connectivity by configuring the frame relay sub-interface on this router, the correct description of the frame relay sub-interface is ______. (Multiple choice)
- A. Multiple sub-interfaces under one interface can be configured as the same IP subnet
- B. Multiple virtual circuits can be configured on the point-to-point type sub-interface
- C. Only one virtual circuit can be configured on a point-to-point subinterface
- D. For the network layer, there is no difference between the sub-interface and the main interface
正解: C,D
質問 111
To view the debug information of NAT packets, you should use the ______ command to turn on the debug information and output it to the display.
- A. terminal monitor debugging nat
- B. terminal monitor terminal debugging debug nat
- C. terminal monitor terminal debugging debugging nat packet
- D. terminal debugging debugging nat
正解: C
質問 112
NAPT mainly converts the ______ information of the data packet? (multiple choice)
- A. Data link layer
- B. Application layer
- C. Network layer
- D. Transport layer
正解: C,D
質問 113
The following statement about the upgrade of H3C network equipment is correct ______. (Multiple choice)
- A. In an environment where the complex interaction between the client and the server is not convenient, you can use TFTP to upgrade
- B. When using FTP to upgrade, the device can only be used as an FTP client
- C. Use Xmodem to upgrade to the same speed as FTP
- D. When the device cannot boot to the command line mode and needs to upgrade the operating system software, only the Xmodem method can be used
正解: A
質問 114
An MSR router needs to learn routing information through RIP, and the following configuration is made on the router: rip 1 network 0.0.0.0 Then the correct explanation for this configuration is ______.
- A. RIP will publish a default route of 0.0.0.0
- B. All interfaces on this router enable RIP
- C. This configuration is incorrect
- D. When RIP is not enabled on this router
正解: B
質問 115
You can see the following information on the router MSR-1:
[MSR-1]display acl 3000
Advanced ACL 3000, named -none-, 2 rules,
ACL's step is 5
rule 0 permit ip source 192.168.1.0 0.0.0.255
rule 10 deny ip (19 times matched)
The ACL 3000 has been applied to the correct interface and direction.
From this we can know _______. (Multiple choice)
- A. This is a basic ACL
- B. The data packet matching rule 10 may be destined for the destination network segment 192.168.1.0/24
- C. When viewing the information, no data packet from the 192.168.1.0/24 network segment matches the ACL
- D. There is a packet flow that matches rule 10
正解: B,C,D
質問 116
An empty MSR router RTA connects two routers RTB and RTC running in OSPF Area 0 through GE0/0 and GE1/0 respectively. The IP addresses of the interfaces GE0/0 and GE1/0 of RTA are 192.168.3.2/24 and 192.168.4.2/24 respectively. Add the following configuration on RTA:
[MSR-ospf-1] area 0.0.0.0
[MSR-ospf-1-area-0.0.0.0]network 192.168.0 0.0.3.255
[MSR-GigabitEthernet0/0]ospf cost 2
[MSR-GigabitEthernet1/0]ospf dr-priority 0
Then the correct description of the above configuration is _____. (Multiple choice)
- A. RTA can only become the DR of the network segment where one of the GE interfaces is located
- B. RTA may become the DR of the network segment where the two GE interfaces are located
- C. Modifying the Cost of interface GE0/0 does not affect the establishment of OSPF adjacency
- D. This configuration has enabled OSPF on GE0/0 and GE1/0 of the MSR router
- E. This configuration only enables OSPF on the GE0/0 interface of the MSR router
正解: A,C,E
質問 117
Suppose an MSR router obtains two routes to the destination network segment 100.120.10.0/24. The Cost of these two routes are 120 and 10, and the priority is 10 and 150 respectively. Then the data packet destined for this destination address will be ______. (Multiple choice)
- A. Preferentially match the route with Cost 10
- B. Preferentially match the route with priority 150
- C. Preferentially match the route with priority 10
- D. Preferentially match the route with Cost 120
正解: C
質問 118
If the configuration file specified by the user does not exist, the router initializes with _____.
- A. Use minimal configuration
- B. Most used configuration
- C. The last saved configuration
- D. Default configuration
正解: D
質問 119
The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN----S1/0--MSR-2--GE0/0----HostB
The customer's WAN network only supports synchronization, so the S1/0 interface of the two routers can run ______. (Multiple choice)
- A. HDLC+RIP
- B. PPP+RIP
- C. HDLC+OSPF
- D. PPP+OSPF
正解: A,B,C,D
質問 120
An empty-configured MSR router is connected to the same OSPF network through multiple interfaces, and OSPF is enabled on all these interfaces. After the configuration is completed, the router has successfully learned the OSPF routes in the network.
Now run the following command on an OSPF interface of the router:
[MSR-GigabitEthernet0/0]ospf cost 256
In the case of keeping other configurations unchanged, the correct understanding of the configuration is _____.
- A. The configuration command is invalid because the command was entered incorrectly
- B. This configuration will not affect the forwarding path of data packets
- C. This configuration may affect the forwarding path of data packets
- D. This configuration command is invalid because the maximum value of Cost is 255
正解: C
質問 121
The two MSR routers are interconnected through their respective WAN interface S1/0, and RIPv2 is running on the two routers to dynamically complete the remote routing of each other. Now for security reasons, it is necessary to add verification on the RIP, so which of the following Is the RIP configuration correct?
- A. [MSR-rip-2]rip authentication-mode simple 123
- B. [MSR]rip authentication-mode simple 123
- C. [MSR-rip-1] rip authentication-mode simple 123
- D. [MSR-serial1/0]rip authentication-mode simple 123
正解: D
質問 122
To view the comprehensive information of the routing table on the MSR router, such as the total number of routes, the number of RIP routes, the number of OSPF routes, the number of active routes, etc., which of the following commands can be used?
- A. [MSR] display ip routing-table accounting
- B. <MSR>display ip routing-table statistics
- C. [MSR] display ip routing-table
- D. [MSR-GigabitEthernet0/0]display ip routing-table statistics
正解: B,D
質問 123
I see the following information on a router MSR-1:
[MSR-1]display arp all
Type: S-Static D-Dynamic
IP Address MAC Address VLAN ID Interface Aging Type
168.0.2 0123-4321-1234 N/A GE0/0 20 D After checking that the host has a large number of viruses, now the customer wants to prohibit the message sent by the host from passing through MSR-1, then _______. (Multiple choice)
- A. Basic ACL can be configured on the router and applied in the inbound direction of GE0/0.
- B. Advanced ACL can be configured on the router and applied in the inbound direction of GE0/0.
- C. Advanced ACL can be configured on the router and applied in the outbound direction of GE0/0.
- D. You can configure basic ACL on the router and apply it in the outbound direction of GE0/0.
正解: A,B
質問 124
The customer's router is connected to the operator's network through DCC, so which of the following interfaces on the router can realize DCC dial-up?
- A. Dialer interface
- B. Async interface
- C. PRI interface
- D. Serial interface
正解: A,B,C,D
質問 125
119.100.1100 1000
132.119.100.1100 1111 .... Broadcast address
13. The well-known port number of the transport layer used by TFTP is ______.
- A. 0
- B. 1
- C. 2
- D. 3
正解: C
質問 126
An MSR router is connected to the Internet through the WAN interface, and the following interface display information is seen on the MSR router:
Mp-group1 current state: UP
Line protocol current state: UP
Description: Mp-group1 Interface
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Internet Address is 172.16.1.100/24 Primary
Link layer protocol is PPP
LCP opened, MP opened, IPCP opened
Physical is MP, baudrate: 64000 bps
Then the correct analysis of the information displayed above is _____. (Multiple choice question)
- A. The network layer protocol running on the interface is IP
- B. The physical cable used by this interface is an MP cable
- C. The link layer protocol encapsulated by the interface is PPP
- D. The interface Mp-group1 contains at least two physical interfaces
正解: A,C
質問 127
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