1. As shown, RTA, RTB and RTC run BGP routing protocol, analysis configuration.

RTA:

bgp 100

peer 13.13.13.2 as-number 200

#

ipv4-family unicast

network 12.12.12.0 255.255.255.252

undo synchronization

peer 13.13.13.2 enable

RTB:

bgp 100

peer 23.23.23.2 as-number 200

#

ipv4-family unicast

network 12.12.12.0 255.255.255.252

undo synchronization

peer 23.23.23.2 enable

RTC:

bgp 200

peer 13.13.13.1 as-number 100

peer 23.23.23.1 as-number 100

#

ipv4-family unicast

undo synchronization

peer 13.13.13.1 enable

peer 23.23.23.1 enable

Debugging found that the neighbor relationship can be established normally, and the RTC's BGP routing table correctly received the RTA and RTB advertised routes 12.12.12.0/30.

For RTC, Which statement is correct?

2. Which parts at most are composed by BGP protocol's UPDATE packet? (Multiple choice)

3. Class A addresses the mask is 255.255.128.0, state how many bits that it uses to subnetting?

4. In the OSPF routing domain, when realizing inter-area routes aggregated, need to go through detailed router entries between the areas. Which of the following mode can achieve?

5. RTA is running OSPF routing protocol, the following information is displayed on the RTA, and then which of the following statement is correct? (Multiple choice)

[RTA] dis ospf Isdb

OSPF Process 1 with Router ID 1.1.1.1

Link State Database

Area: 0.0.0.1

Type LinkState ID AdvRouter Age Len Sequence Metric

Router 2.2.2.2 2.2.2.2 1518 36 8000000c 0

Router 1.1.1.1 1.1.1.1 1286 36 8000001b 0

Network 10.1.1.1 1.1.1.1 1595 32 80000007 0

SNet 192.2.2.0 2.2.2.2 1403 28 80000008 3124

SNet 10.2.2.0 2.2.2.2 1403 28 80000007 1563

NSSA 10.1.1.0 1.1.1.1 1284 36 80000001 1

NSSA 1.1.1.1 1.1.1.1 1029 36 80000002 1

6. For the BGP MED (Multi-Exit Discriminators) properties, which of the following description is correct? (Multiple choice)

7. In OSPF routing protocol, the role of the virtual link is to connect any two non-backbone areas, implementing routing information's interchange.

8. Which of the following options belong to a multicast applications? (Multiple choice)

9. In the ISIS protocol pseudo node LSP, what is the content of the description?

10. The following about OSPF establish the adjacency on-demand circuit, how to detect adjacency status has been expired?

11. A subnet segment address is 5.32.0.0 and the mask code is 255.224.0.0 network, which is the the maximum host address it allowed?

12. What kinds of ways does the interface identifier generate in an IPv6 address? (Multiple choice)

13. Which of the following parameters is to prevent a routing loop within CLUSTER?

14. When viewing the RTA's LSTA, there is such entry information:

Type: Router

Ls id: 10.0.2.2

Ads rtr: 10.0.2.2

Ls age: 126

Len: 36

Options: ABR E

seq#: 80000004

chksum: 0xb434

Link count: 1

* Link ID: 10.0.24.4

Data: 10.0.24.2

Link Type: ?

Then what does the “?” in Link Typ represent? (Multiple Choice)

15. The following description about the routing attributes of BGP, which are wrong? (Multiple choice)

16. Which of the following update mechanisms does the OSPF routing protocol use to ensure routing information calculation's reliability and stability (multiple choice)

17. Which of the followings do belong to the anti-ring mechanism of BGP? (Multiple choice)

18. BGP generally are attributed to different ISP, for the customer network which AS number is the best choice?

19. Which of the following descriptions about NAT options are correct? (Multiple choice)

20. In OSPPv3, even if the two routers connected interfaces IPv6 address is not on the same network segment, but it can still establish adjacencies.