2023 New Training Course GB0-191-ENU Tutorial Preparation Guide [Q18-Q35]

Q18. The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively.
At the same time, the Ethernet port of MSR-1 is connected to MSR-4. All four routers have run the RIP protocol and completed routing learning correctly. All routers have started all the features of RIP to prevent loops. At this time, it is found that the MSR If the network 192.168.0.0 on -2 fails, then ______. (Multiple choice)

Q19. The Layer 2 Ethernet switch searches the MAC address table for an entry that matches the destination MAC address of the frame, thereby forwarding the frame from the corresponding interface. If the search fails, the switch will ______.

Q20. The Serial 0/0 and Serial 0/1 interfaces of the router of the Shenzhen branch of XYZ Company are connected to two different ISPs through two WAN lines. Both of these ISPs can visit the website of the Beijing head office at 202.102.100.2.
The following static routes are configured on the routers of the Shenzhen branch:
ip route-static 202.102.100.2 24 Serial 0/0
ip route-static 202.102.100.2 24 Serial 0/1
So which of the descriptions of these two routes is correct? (multiple choice)

Q21. In the LCP negotiation phase, what content will PPP negotiate? (multiple choice)

Q22. The two branches of XYZ company are located in different regions, and a wide area network connection must be established between them. According to the plan, the WAN adopts the PPP protocol. Considering network security, it is required that password-type message information is not allowed to be transmitted in clear text on the network. Then which PPP authentication protocol should be adopted?

Q23. The transport layer protocol that DNS can use is ______.

Q24. The following description of the characteristics of the router is correct ______. (Multiple choice)

Q25. The main link of the WAN of a company’s MSR router is a synchronous and asynchronous serial port, which is connected to the operator’s network through a V.35 cable; the router also uses an ISDN BRI interface as a backup link.
Regarding the line bandwidth, which of the following statements are correct? (multiple choice)

Q26. The network administrator of a certain enterprise needs to set a subnet mask to divide the class C network 211.110.10.0 that he is responsible for into at least 8 subnets. How many subnet masks can be used for division? (multiple choice)

Q27. According to the different ways the switch processes VLAN data frames, the port types of H3C Ethernet switches are divided into ______. (Multiple choice)

Q28. A network connection is like:
HostA—-GE0/0–MSR-1–S1/0———S1/0–MSR-2–GE0/0—-HostB
Two of the MSR routers MSR-1 and MSR-2 are interconnected back-to-back through their S1/0 interfaces, and their GE0/0 interfaces are respectively connected to the client hosts HostA and HostB. By configuring the IP address and routing, HostA can communicate with HostB in the current network. The IP address of HostA is 192.168.0.2/24, and the default gateway is 192.168.0.1. The GE0/0 interface address of MSR-1 is 192.168.0.1/24.
The following configuration has been added to MSR-1:
firewall enable
firewall default permit
acl number 3003
rule 0 deny icmp source 192.168.0.2 0 icmp-type echo-reply
interface GigabitEthernet0/0
firewall packet-filter 3003 inbound
So ______ . (Multiple choice)

Q29. On the MSR router, if you want to completely delete an obsolete file in the recycle bin, you can execute the ______ command.

Q30. The following devices working at the data link layer of the OSI reference model are ______.

Q31. A Layer 3 switch is connected to the GigabitEthernet0/0 interface of the customer’s router MSR-1, and this Layer 3 switch is the default gateway for multiple segments of the customer’s office network. At the same time, the WAN interface of the router is connected to the Internet, and there is a DNS server on the Internet to provide services for hosts in the customer’s local area network. The customer’s office network can access the Internet normally. Now the following ACL is applied in the inbound direction of GigabitEthernet0/0 of MSR-1 :
firewall enable
acl number 3006
rule 0 deny tcp source 192.168.1.0 0.0.0.255
rule 5 permit ip
So ______ . (Multiple choice)

Q32. The correct statement below is ______. (Multiple choice)

Q33. On the MSR router, if a certain file has been set as the startup file, you can use the ______ command to check whether the setting is correct.

Q34. Execute display ip routing-table on the router, then the next hop interface displayed in the routing table may be ______.

Q35. As shown in the figure, S3610 switch SWA uses ports E1/0/1 and E1/0/2 to connect to another switch SWB. In order to increase bandwidth, static link aggregation needs to be configured on the switch.
Which of the following configuration is correct? (multiple choice)