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NEW QUESTION 151
When the administrator configures VRRP, which of the following are not mandatory? (Multiple choice)
- A. Preemption mode
- B. Priority of virtual routers
- C. Virtual IP address
- D. Preemption delay
Answer: A,B,D
NEW QUESTION 152
The following information is the output of a router, which of the following regarding the information is true?
- A. The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the route entry cannot be advertised to any other BGP peers
- B. The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the route entry cannot be advertised outside the local AS
- C. The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the route entry cannot be advertised to any BGP neighbors
- D. The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the route entry can be advertised to any BGP neighbor
Answer: A
NEW QUESTION 153
Which of the following statements about MSTP is correct? (Multiple choice)
- A. MSTP supports compatible operation with RSTP
- B. MSTP can achieve load sharing of traffic between different LANs
- C. Compared with RSTP.MSTP has more port roles
- D. The BPDU format of MSTP is the same as RSTP
Answer: A,B,C
NEW QUESTION 154
There are 4 port roles defined in RSTP, among which the part role values in the flags field of the Alternative port and Backup port in the STP packet are always 01.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 155
Which of the following descriptions of the LSA age field is correct? (Multiple choice)
- A. The unit of LSA age is second, the LS age of LSA in LSDB increases with time
- B. If the LS age of an LSA reaches LSRefreshTime (30min), any router can regenerate an instance of the LSA for this LSA
- C. The unit of LSA age is second, the LS age of LSA in LSDB decreases with time
- D. If the LS age of an LSA reaches LSRefreshTime (30min), the producer of this LSA needs to regenerate an instance of the LSA
Answer: A,D
NEW QUESTION 156
The RSTP mid-side port does not need to wait for the forwarding delay, and can directly enter the forwarding state. If the edge port receives the BPDU, the edge port will be directly closed and enter the Aerror-dowm state.
- A. False
- B. True
Answer: A
NEW QUESTION 157
As show in the figure, which of the following statements is true?
- A. R1 and R2 can establish adjacency and can complete routing calculations
- B. R1 and R2 cannot establish adjacency, because OSPF process ID is not consistent
- C. R1 and 2 cannot establish adjacency, because the network type of the interface is not consistent
- D. R1 and R2 can establish adjacency, but cannot complete routing calculations
Answer: D
NEW QUESTION 158
Which of the following routing protocols support the release of default routes through command configuration? (Multiple choice)
- A. ISIS
- B. IGMP
- C. BGP
- D. OSPF
Answer: A,C,D
NEW QUESTION 159
Which of the following description of BGP features is false?
- A. BGP has rich routing filtering and routing strategies
- B. BGP is an external routing protocol, which used to transfer routing information between ASs
- C. BGP supports CIDR
- D. BGP is a link state protocol
Answer: D
NEW QUESTION 160
How long is the default DHCP address pool lease period?
- A. 1 month
- B. 1 hour
- C. 1 week
- D. 1 day
Answer: D
NEW QUESTION 161
In OSPF broadcast or NBMA network types, devices with a large DR Priority may not necessarily become DR.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 162
Among the commonly used routing policy tools for BGP, what can be used to filter routes? (Multiple choice)
- A. traffic-policy
- B. ip extcommunity-filter
- C. filter-policy
- D. route-policy
Answer: B,C,D
NEW QUESTION 163
The MQC traffic behavior supports multiple actions on messages. Please match the actions of the following MQC traffic behaviors with their functions.
Answer:
Explanation:
NEW QUESTION 164
By default, the interval for sending PIM Hello packets on the router interface is () seconds.
Answer:
Explanation:
30
NEW QUESTION 165
The output information of a router is as follows, please match the information on the left with the information on the right.
Answer:
Explanation:
NEW QUESTION 166
IPv6 link-local addresses can be generated through stateless automatic configuration.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 167
Among the matters needing attention in configuring the Stub area, which of the following description is correct?
- A. If an area is configured as a stub area, all routers in the area must be configured with stub area attributes
- B. The virtual link can traverse the stub area
- C. ASBR can exist in the stub area
- D. The backbone area can be configured as a stub area
Answer: A
NEW QUESTION 168
Which of the following command is to configure VRRP to track the state of the physical interface?
- A. track vrrp vrid 1 interface Gigabitethernet0/0/0
- B. vrrp vrid 1 track interface Gigabitethernet0/0/0
- C. vrrp vrid 1 interface Gigabitethernet0/0/0 track
- D. vrrp vrid 1 interface Gigabitethernet0/0/0
Answer: B
NEW QUESTION 169
Which of the following description about BGP reliable routing updates is correct?
- A. BGP works on top of UDP, and the transport layer protocol is 179
- B. BGP sends complete routing table information every time when a route is updated
- C. BGP uses multicast updates
- D. BGP does not need to periodically advertise routing information
Answer: D
NEW QUESTION 170
Regarding the description of the VRRP slave device, which of the following is correct? (Multiple choice)
- A. The slave will discard IP packets whose destination MMC address is the virtual MAC address
- B. When the slave receives the VRRP message sent by the Master, it can judge whether the status of the Master is normal
- C. When receiving a VRRP message with priority 0, Slave will directly switch to Master
- D. The slave responds to the IP packet whose destination IP address is the virtual IP address
Answer: A,B,C
NEW QUESTION 171
Which of the following description about configuring a roaming group is wrong?
- A. Member ACs need to designate an AC as their Master Controller
- B. After enabling the Master Controller function, the AC joins the roaming group by default and can manage other ACs
- C. Master Controller manage each AC via CAPWAP tunnels
- D. Master Controller is a logical role, which can be assumed by any common entity AC
Answer: B
NEW QUESTION 172
There are the following states in the process of BGP neighbor establishment. Then the sequence of the state machine to establish a successful connection is:
1. Active
2. OpenConfirm
3. Idle
4. Establish
5. OpenSent
- A. 1-3-5-2-4
- B. 3-5-1-2-4
- C. 3-1-5-2-4
- D. 3-1-2-5-4
Answer: C
NEW QUESTION 173
Execute the () saved-configuration command to clear the content of the configuration file used for the next startup of the device, and cancel the configuration file used for the next startup of the specified system, so that the device configuration is restored to the default value. (Please fill in the complete command, not abbreviated, and use all lowercase English letters)
Answer:
Explanation:
reset
NEW QUESTION 174
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