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H12-821_V1.0 Dumps Full Questions - Exam Study Guide
NEW QUESTION 30
ON a stateful inspection Firewall where there is no session table, when the status detection mechanism is enabled and the second packet (CYN+ACK) of 3-way hadshakes reaches the firewall. Which of the following statements is true?
- A. If the firewall security policy permits packets to pass, the session table is created.
- B. If the firewall security policy permits packets to pass, the packets can pass the firewall.
- C. By default, when status detection is disabled and the permit policy is configured packets can pass.
- D. Packets must pass the firewall, and a session table is established.
Answer: A
NEW QUESTION 31
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. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.
- B. Controls the advertisement of routes generated by the device.
- C. Is used together with the route import function to advertise some imported external routes to neighbors.
- D. Filters LSPs to be advertised.
Answer: A
NEW QUESTION 32
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 33
Which of the following statements regarding the stateful inspection firewall is true?
- A. When the stateful inspection firewall checks packets, packets of one same connection are not correlated.
- B. Because UDP is a connectionless protocol, so the stateful inspection firewall cannot match UDP packets with the status table.
- C. The stateful inspection firewall needs to match the rules for each incoming packet.
- D. The stateful inspection firewall only needs to match the first data packet against a rule, and the subsequent packets of the connection are matched directly in the state table.
Answer: D
NEW QUESTION 34
When two routers exchange LSDB information using DD packets, a master/slave relationship is formed first, the router with a larger router ID is the master, and determine the MS bit.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 35
A Huawei firewall by default creates security zones named untrust, dmz, _________ and local. (Use Lowercase letters.)
Answer:
Explanation:
security policy
NEW QUESTION 36
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. S4/0/0 sends IIH packets at the interval of 30s.
- C. The circuit level of S4/0/0 is Level-1.
- D. The cost of S4/0/0 is 20.
Answer: B
NEW QUESTION 37
Which of the following statements is false?
- A. If two devices have the same router priority, the device with a larger router ID has a higher election priority.
- B. If the current DR fails, the current BDR automatically becomes a new DR, and a BDR will be elected again.
- C. A device with a higher router priority has a higher election priority.
- D. When a router with the highest router priority joins an OSPF network, this router will become the new DR.
Answer: B
NEW QUESTION 38
Which of the following statements about the forwarding plane of a switch is false?
- A. Can collect packet statistics.
- B. Consists of main control boards and interface boards.
- C. Provides high-speed and non-blocking data channels.
- D. Can encapsulate and decapsulate packets.
Answer: A
NEW QUESTION 39
Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?
- A. The port in discarding state does not learn MAC addresses table.
- B. The port In learning stole docs not learn MAC addresses table.
- C. The port in discarding or learning state does not learn MAC addresses
- D. The port In discarding or learning state does not forward data frames.
Answer: C
NEW QUESTION 40
Which of the following PIM protocol packets have unicast destination addresses.
- A. Register Stop
- B. Assert
- C. Bootstrap
- D. Graft
Answer: D
NEW QUESTION 41
Which of the following statements about WLAN roaming are true?
- A. APs for roaming must have overlapping signal coverage.
- B. APs for roaming must be in the same basic service set (BSS).
- C. APs for roaming must be in the same extended service set (ESS).
- D. APs for roaming do not need to have overlapping signal coverage.
Answer: D
NEW QUESTION 42
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. 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
- 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. The role of the designated port that is enabled with root protection cannot be changed
- 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 43
BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 44
Which of the following statements regarding the firewall zone security level is false?
- A. Only the security level of the user-defined zone can be configured.
- B. The configured security level cannot be changed.
- C. The default security level of the new zone is 1.
- D. Two zones cannot be configured with the same security level.
Answer: B
NEW QUESTION 45
If a router ID is configured in both the system via and the BGP view, BGP uses the router ID configured in the BGP view because the BGP view takes precedence over the system view.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 46
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