The following statements about OSPF information display and debugging commands are correct _____. (Multiple choice)

• A.You can view the link state database of the router through the display ospf lsdb command. The link state database of all OSPF routers in the network should be the same
• B.Use the display ospf routing command to view the router's OSPF routing situation, not all OSPF routes will be added to the global routing table
• C.View OSPF error information through display ospf fault
• D.Use the display ospf peer command to view the router's OSPF neighbor relationship

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Which of the following levels does the TCP/IP protocol stack include? (multiple choice)

• A.Network layer
• B.Network interface layer
• C.Application layer
• D.Session layer
• E.Presentation layer
• F.Transport layer

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The correct statement below is ______. (Multiple choice)

• A.The FTP control connection is closed after the data transfer is over
• B.The FTP control connection remains open during the entire FTP session
• C.The FTP data connection remains open during the entire FTP session
• D.The FTP data connection is closed after the data transfer is over

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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.When viewing the information, no data packet from the 192.168.1.0/24 network segment matches the ACL
• C.This is a basic ACL
• D.There is a packet flow that matches rule 10

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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)

• A.Only the second route will be written in the router's routing table
• B.The traffic to Beijing can achieve load sharing through these two routes
• C.The two routes to Beijing can back up each other
• D.Only the first route will be written in the router's routing table

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