[Jan 16, 2022] Fully Updated Dumps PDF - Latest H12-821_V1.0 Exam Questions and Answers
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NEW QUESTION 29
Four routers run ISIS and have established adjacencies. The area IDs and router levels are marked in the following figure. If route leaking is configured on R3, which of the following is the cost of the route from R4 to 10.0.2.2/32?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 30
To inject IGP routes into BGP routes, you can only use the network command.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 31
In a route-policy, which of the following BGP attributes can be used in apply clauses?
- A. MED
- B. Local-Preference
- C. Tag
- D. AS_Path
Answer: A,B,D
NEW QUESTION 32
Preferences of routing protocols determine the sequence In which a router selects a route among routes to the same destination /earned through different routing protocols.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 33
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?
- A. Filters LSPs to be advertised.
- B. Controls the advertisement of routes generated by the device.
- C. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.
- D. Is used together with the route import function to advertise some imported external routes to neighbors.
Answer: C
NEW QUESTION 34
Which of the following statement regarding the display ospf peer command output is true?
- A. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.
- B. Router ID indicates that the local router ID Is 10.1.1.1.
- C. Through negotiation during DD packet exchange, the local end becomes the slave.
- D. The DR address is 10.1.1.1
Answer: A
NEW QUESTION 35
As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?
- A. After a port is Configured as an edge port, the port can quickly enter the Forwarding state.
- B. You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.
- C. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.
- D. You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.
Answer: A
NEW QUESTION 36
Which of the following statements regarding the firewall zone security level is false?
- A. The default security level of the new zone is 1.
- B. The configured security level cannot be changed.
- C. Two zones cannot be configured with the same security level.
- D. Only the security level of the user-defined zone can be configured.
Answer: B
NEW QUESTION 37
Regarding the route-policy set-cost configuration below, which of the following statements is true?
- A. The route 11.1.0.0/16 will continue to match node 20 after permitted by node 10, and (he final cost is set to 200.
- B. The route 11.1.0.0/16 is permitted by node 10, and its tost Is set to 300.
- C. All the routes that are not permitted by node 10 will be denied.
- D. The cost of all routes is set to 200.
Answer: B
NEW QUESTION 38
Which of the following statements regarding the BGP error display of a router false?
- A. Error Type indicates that the BGP error is caused by the neighbor relationship error.
- B. The error occurred at 12:40:39 on March 22, 2010.
- C. The error may be caused by the incorrect neighbor address.
- D. The neighbor address of this router is 10.1.1.5.
Answer: A
NEW QUESTION 39
Which of the following statements about multicast packet forwarding is true?
- A. IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.
- B. In multicast transmission, the destination address of a packet can be the unicast address of a host.
- C. If a multicast data packet fails the RPF check, the packet must have been received through a sub-optimal interface. However, this interface still receives and forwards the multicast traffic downstream.
- D. The source address of a multicast packet is a unicast address.
Answer: C
NEW QUESTION 40
Compress the 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF address.___________(if the answer contains letters, capitalize them.)
Answer:
Explanation:
pending
NEW QUESTION 41
IGMPV3 not only supports IGMPv1 General Query and IGMPv2 Group-Specific Query, and also IGMPv3 Source/Group-Specific Query.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 42
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?
- A. 1.1.1.1/24
- B. 1.1.1.1/26
- C. 1.1.1.2/16
- D. 1.1.1.1/32
Answer: A
NEW QUESTION 43
Which of the following attribute must be carried in an Update message?
- A. AS-Path
- B. MED
- C. Prefval
- D. Local-pref
Answer: D
NEW QUESTION 44
A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?
- A. S4/0/0 supports IPv6.
- B. The circuit level of S4/0/0 is Level-1.
- C. The cost of S4/0/0 is 20.
- D. S4/0/0 sends IIH packets at the interval of 30s.
Answer: D
NEW QUESTION 45
What parameters can a DHCP6 server assign to a DHCPv6 client?
- A. DNS server address
- B. SNTP server address
- C. Gateway address
- D. IPV6 address/prefix
Answer: B
NEW QUESTION 46
Drag the following VRRP states to the corresponding working mechanisms.
Answer:
Explanation:
Explanation
Master
Backup
Master
Backup
NEW QUESTION 47
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. The role of the designated port that is enabled with root protection cannot be changed
- B. If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation
- C. When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state
- D. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period
Answer: B
NEW QUESTION 48
An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?
- A. 75s
- B. 20s
- C. 60s
- D. 90s
Answer: B
NEW QUESTION 49
Which of the following statements regarding DR/BDR are false?
- A. DR others listen on the multicast address 224.0.0.5.
- B. DR others listen on the network address 224.0.0.6.
- C. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.
- D. All DR others establish neighbor relationships with DR and BDR only.
Answer: D
NEW QUESTION 50
Which of the following statements regarding the LSA age field are true?
- A. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.
- B. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.
- C. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.
- D. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.
Answer: B
NEW QUESTION 51
Which of the following statements regarding the summary automatic command and BGP route summarization is false?
- A. After this command is configured, BGP sends only the summarized routes to peers
- B. After this command is configured, BGP summarizes routes based on natural network segments
- C. This command enables automatic summarization for the locally imported routes
- D. This command is used to implement automatic summarization. Automatic summarization takes precedence over manual summarization
Answer: B
NEW QUESTION 52
Which of the following statements regarding an IP prefix are true?
- A. An IP prefix filter can be used to filter data packets.
- B. An IP prefix filter cannot be used to filter data packets.
- C. An IP prefix filter is used to filter IP address prefixes and cannot match an IP prefix number and a prefix length at the same time.
- D. An IP prefix filter is used to filter IP address prefixes and can match an IP prefix number and a prefix length at the same time.
Answer: A
NEW QUESTION 53
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