2024年最新の認定サンプル問題H12-821_V1.0-ENU問題集と練習試験合格させます
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質問 # 12
What are the main types of IS-IS Hello packets? (Multiple choice)
- A. Leve1-2 LAN IIH
- B. Leve1-1 LAN IIH
- C. Leve1-1-2 LAN IIH
- D. P2P LAN IIH
正解：A、B、D
質問 # 13
Which of the following descriptions about IPv6 transition technology is correct?
- A. Conversion technology is suitable for communication between pure IPv4 network and pure IPv6 network, which is convenient for network management and auditing
- B. The principle of conversion technology is to rewrite the header of IPv6 into the header of IPv4, or rewrite the header of IPv4 into the header of IPv6. Using tunneling technology, IPv4 can be encapsulated in the IPv6 tunnel to achieve intercommunication, but the endpoint of the tunnel Need to support dual stack technology
- C. IPv4/IPv6 dual-stack technology has hardware requirements for the device, and two network cards are required to run IPv4/IPv6 respectively
正解：A
質問 # 14
In the network shown in the figure, R1 and R2 run IS-IS and establish an adjacency relationship. The Loopback0 interface of R2 enables IS-IS, and the Loopback3 interface of R2 does not enable IS-IS. Do as follows in the IS-IS process of R2 the configuration shown in figure, which of the following statement is correct? (Multiple choice)
- A. There is no route 10.0.2.3/32 in the R1 routing table
- B. The 10.0.2.2/32 and 10.0.2.3/32 routes do not exist in the routing table of R1
- C. There is a 10.0.2.2/32 route in the routing table of R1
- D. There is a 10.0.2.3/32 route in the routing table of R1
正解：A、C
質問 # 15
Which of the following operations can PBR (Policy-Based-Route) perform? (Multiple choice)
- A. Modify the Qos information of matching traffic
- B. Modify the LSP of the matching packet
- C. Modify the outbound interface of matching traffic
- D. Modify the next hop address of matching traffic
正解：A、D
質問 # 16
Which of the following descriptions about the OSPF Stub area is wrong?
- A. The backbone area (Area0) cannot be configured as a stub area
- B. Virtual connections cannot exist in the stub area
- C. ASBRs cannot exist in the stub area, that is, routes outside the autonomous system cannot be propagated in the stub area
- D. The cost of the default route sent to the Stub area cannot be configured
- E. If an area is to be configured as a Stub area, all routers in the area must be configured with Stub area attributes
正解：D
質問 # 17
What packet types does OSPF include? (Multiple choice)
- A. Hello
- B. Link State DD
- C. Database Description
- D. Link State Request
正解：A、C、D
質問 # 18
Regarding the description of the characteristics of the routing strategy, which is correct?
- A. Forwarding according to the routing table based on the destination address
- B. Application command policy- based-route
- C. Manual hop-by-hop configuration is required to ensure that packets are forwarded according to the policy
- D. Based on the forwarding plane, serving the forwarding strategy
正解：A
質問 # 19
In BGP4+, what is the next hop network address field carried by the MIP_REACH_NLRI attribute in the Update message?
- A. Can only be a link-local address
- B. Can carry link local address and global unicast address at the same time
- C. It can only be a global unicast address
- D. Can be just a link-local address
正解：B
質問 # 20
Which of the following advantages of address translation technology is not included?
- A. Address translation can shield the users of the internal network and improve the security of the internal network
- B. Address translation can enable internal network users (private IP addresses) to access the Internet conveniently
- C. Address translation can handle the case where the IP header is encrypted
- D. Address translation can enable many hosts in the internal city network to share a P address to access the Internet
正解：C
質問 # 21
In the WLAN three-layer networking scenario, APs will go online through the following stages. Please sort them in order. (Multiple choice)
- A. AP discovers AC through option 43
- B. AP and AC establish a CAP7AP tunnel
- C. AP obtains IP address
- D. AP goes online, AC delivers service configuration to AP
正解：A、B、C、D
質問 # 22
Regarding the description of IBGP neighbors and EBGP neighbors, which of the following is false?
- A. If the two exchange BGP packets peers belong to different autonomous systems, then the two peers are EBGP peer
- B. If the two exchange BGP packets peers in the same autonomous system, then the two peers are IBGP peer
- C. Two routers running BGP must have IP connectivity to establish a TCP session
- D. IBGP peers must be physically directly connected
正解：D
質問 # 23
The network is as shown in the figure, and SWA, SWB, SWC, and SWD run RSTP, then which of the following statement is correct? (Multiple choice)
- A. After receiving the BPDU, the edge port will participate in the calculation of the spanning tree again
- B. The edge port can be opened on the GE0/0/2 port of SWB, so that the interface connected to the terminal can quickly enter the forwarding state
- C. After being configured as an edge port, the interface can quickly enter the forwarding state
- D. The edge port can be opened on the GE0/0/2 port of SWC, so that the interface connected to the terminal can quickly enter the forwarding state
正解：A、C、D
質問 # 24
Which of the following option packets belong to OSPF protocol packets? (Multiple choice)
- A. LSA
- B. Hello
- C. LSU
- D. LSR
正解：B、C、D
質問 # 25
Regarding BGP route announcement, which of the following descriptions is wrong? (Multiple choice)
- A. All BGP routes learned from all BGP neighbors are announced to other BGP neighbors.
- B. Only the best route preferred by BGP can be announced to other BGP neighbors
- C. By default, routes learned from IBGP are not forwarded to other IBGP neighbors
- D. Only routes learned from IGP can be advertised to other BGP neighbors
正解：A、D
質問 # 26
It is possible to prevent the HSB backup channel between the active and standby ACs from being interrupted and undetectable by sending active and standby service messages and retransmitting mechanisms.
- A. False
- B. True
正解：A
質問 # 27
Regarding the OSP command description, which is incorrect? (Multiple choice)
- A. The no-summary parameter is configured for the stub area and the totally stub area
- B. The stub router command is used to configure the secondary router as a stub router. The stub router can form a neighbor relationship with non-stub routers.
- C. There is no need to use router-id in OSPF v3 configuration, the configuration method is the same as OSPF v2
- D. The difference between OSPF v2 and OSPF V3 configuration interface commands is that OSPF v2 can use the network command, while OSPF v3 is directly enabled on the interface
正解：A、B、C
質問 # 28
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