[2022年01月11日] 最新をゲットせよ！GB0-191-ENU認定練習テスト問題と試験問題集
リアルGB0-191-ENU試験問題集解答で有効なGB0-191-ENU問題集PDF
質問 239
The three MSR routers RTA, RTB, and RTC are connected to the same frame relay network through their respective S1/0 interfaces. This frame relay network can provide enough PVC resources. As a network engineer, you need to assign IP addresses to these frame relay interfaces.
Which of the following statements is incorrect?
- A. If transit through any router is not allowed, at least two IP subnets are required to enable three routers to communicate with each other through this frame relay network
- B. Under the premise of correct routing configuration, three routers can communicate through this frame relay network without configuring sub-interfaces.
- C. If transit through any router is not allowed, at least three IP subnets are required to realize the two-by-two intercommunication of the three routers through this frame relay network
- D. Under the premise of correct routing configuration, three routers can communicate through this frame relay network with only one IP subnet.
正解: C
質問 240
In the OSI reference model, encryption is a function of ______.
- A. Session layer
- B. Transport layer
- C. Presentation layer
- D. Physical layer
正解: C
質問 241
Which of the following statements about the OSPF area in the network (Area) is correct? (multiple choice)
- A. Routers in multiple OSPF areas in the same AS share the same LSDB
- B. A router in the network may belong to multiple different areas, but one of the areas must be the backbone area
- C. A router in the network may belong to multiple different areas, but these areas may not be backbone areas
- D. Only OSPF routers in the same area can establish neighbors and adjacencies
正解: C,D
質問 242
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 terminal debugging debugging nat packet
- B. terminal monitor debugging nat
- C. terminal monitor terminal debugging debug nat
- D. terminal debugging debugging nat
正解: A
質問 243
Three MSR routers are connected in the same LAN network, as shown in the figure. Run OSPF on the LAN interconnection network segment of the three routers, and the DR priorities of RTA, RTB, and RTC are 2, 2, and 3 respectively.
Due to the failure of the RTC LAN link, only RTA and RTB are currently working normally, and the OSPF neighbor status between RTA and RTB is stable. So _____ . (Multiple choice)
- A. After the RTC link is restored, 3 OSPF adjacencies will be established in the network
- B. After the RTC link is restored, the OSPF adjacency status of RTC and RTB is FULL
- C. After the RTC link is restored, the DR will be reselected in the network, and the RTC will become the new DR
- D. After the RTC link is restored, two OSPF adjacencies will be established in the network
正解: A,B
質問 244
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. The data packet matching rule 10 may be destined for the destination network segment 192.168.1.0/24
- B. There is a packet flow that matches rule 10
- C. This is a basic ACL
- D. When viewing the information, no data packet from the 192.168.1.0/24 network segment matches the ACL
正解: A,B,D
質問 245
You see the following prompt information on the router MSR-1:
[MSR-1]display firewall-statistics all
Firewall is enable, default filtering method is'permit'.
Interface: GigabitEthernet0/0
In-bound Policy: acl 3000
Fragments matched normally
From 2008-11-08 2:25:13 to 2008-11-08 2:25:46
0 packets, 0 bytes, 0% permitted,
4 packets, 240 bytes, 37% denied,
7 packets, 847 bytes, 63% permitted default,
0 packets, 0 bytes, 0% denied default,
Totally 7 packets, 847 bytes, 63% permitted,
Totally 4 packets, 240 bytes, 37% denied.
Based on this, it can be inferred that ______. (Multiple choice)
- A. 0% denied default in the above information means that the default matching rule of the ACL is deny
- B. From the 37% denied in the above information, it can be seen that there are data matching the rules in ACL 3000
- C. ACL 3000 is applied in the inbound direction of GigabitEthernet0/0
- D. Some packets do not match the rules in ACL 3000, but match the default permit rules
正解: B,C,D
質問 246
The default subnet mask for class A addresses is ______.
- A. 255.255.255.0
- B. 255.255.0.0
- C. None of the above is correct
- D. 255.0.0.0
正解: D
質問 247
Run OSPF between the four MSR routers and divide the area. The connection and division methods are shown in the figure.
It is known that the OSPF Cost value of all links in the network is 10, so the correct description of this figure is ______. (Multiple choice)
- A. RTD access to RTB will give priority to RTD->RTA->RTB path
- B. After the link between Area 0 fails, the path for RTA to access RTB is RTA->RTD->RTC->RTB
- C. There are two equivalent paths for RTA to access RTC, namely RTA->RTB->RTC and RTA->RTD-RTC
- D. All four routers in the network are ABR (Area Border Router)
正解: A
質問 248
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. This configuration may affect the forwarding path of data packets
- B. The configuration command is invalid because the command was entered incorrectly
- C. This configuration will not affect the forwarding path of data packets
- D. This configuration command is invalid because the maximum value of Cost is 255
正解: A
質問 249
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
- C. <MSR>display ip routing-table statistics
- D. [MSR-GigabitEthernet0/0]display ip routing-table statistics
正解: C,D
質問 250
The port Ethernet1/0/4 of the switch SWA is connected to a router.
If the administrator wants to disable the spanning tree function on this port, which of the following commands needs to be used?
- A. [SWA-Ethernet1/0/4] undo stp enable
- B. [SWA] undo stp enable
- C. [SWA]stp disable
- D. [SWA-Ethernet1/0/4] stp disable
正解: D
質問 251
On the MSR router, the configuration file is a file saved in ______ format.
- A. Batch file
- B. database file
- C. text file
- D. executable file
正解: C
質問 252
The equipment that should be used in the box in the figure is ______.
- A. Modem
- B. CSU/DSU
- C. Router
- D. WAN switch
正解: C
質問 253
After enabling DHCP on the router RTA, you need to set the address range of the address pool to 192.168.1.0/24, and the default gateway address assigned to the host is 192.168.1.254.
Which of the following configurations can meet these requirements? (multiple choice)
- A. [Router] dhcp server ip-pool 0
- B. [Router-dhcp-pool-0] network 192.168.1.0 mask 255.255.255.0
- C. [Router-dhcp-pool-0] dns-list 192.168.1.10
- D. [Router-dhcp-pool-0] gateway-list 192.168.1.254
正解: A,B,D
質問 254
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