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NEW QUESTION 185
Which of the following types of packets is required to implement virtual machine migration in a BGP EVPN distributed gateway scenario?
- A. Type5
- B. Type2
- C. Type3
- D. Type1
- E. Type4
Answer: B
NEW QUESTION 186
VRRP priority cannot be set to 0, so the device which send VRRP packets of priority 0 will stop adding VRRP backup group, and inform the backup device immediately become a Master device, without waiting for Master_Down_Interval timer expires.
- A. True
- B. False
Answer: A
NEW QUESTION 187
Cross-device link aggregation enables data stream transmission and mutual backup of stack member switches. However, because of the limited bandwidth of stack cables between stack devices, which of the following methods can be used to improve forwarding efficiency?
- A. Configure stack system MAC address switching
- B. Enable traffic local priority forwarding
- C. Enable stack multiple master check function
- D. Connect stack devices through stack cards
Answer: B
NEW QUESTION 188
Which of the following is the correct description of the Register message in PMSM? (Multiple choice)
- A. Register message enables the RP to learn multicast source information.
- B. Register message is sent by the receiver router
- C. Register message is sent by the source DR
- D. Register message is sent to the RP by unicast instead of multicast.
Answer: A,C,D
NEW QUESTION 189
Which of the following statements about IS-IS route leakage are correct? (Multiple Choice)
- A. IS-IS route leakage can be configured in the IPV6 environment.
- B. In the IS-IS route leakage, the route to be leaked cannot be a summary route.
- C. IS-IS route leakage is used to prevent routing loops
- D. IS-IS route leakage does not cause neighbors to oscillate
- E. You can configure IS-IS route leakage on the Level-1 router.
Answer: A,D
NEW QUESTION 190
An MSTP switch treats an RSTP switch as an MSTP domain consisting of a single switch. The MSTP switch resolves the RSTP BPDU to an MST BPDU, where the IRPC is 0.
- A. True
- B. False
Answer: A
NEW QUESTION 191
Which of the following descriptions are true about the establishment process of LDP LSP? (Multiple Choice)
- A. By default, the LSR is for the same FEC. The received label mapping can only come from the optimal next hop. It cannot be from the non-optimal next hop.
- B. The process of establishing an LSP is actually the process of binding the FEC to the label and advertising the binding to the upstream LSR of the LSP.
- C. In the label publishing DoD mode, for a specific FEC, the LSR does not need to obtain the label request message from the upstream to perform label distribution and distribution.
- D. When the network topology changes cause the next hop neighbor to change, the LSR can directly reestablish the LSP by using the label sent by the original non-optimal next hop neighbor.
Answer: B,C,D
NEW QUESTION 192
If you run the PM-SM protocol on the multicast network, you need to configure the RP. The configuration mode of the RP is classified into dynamic RP and static RP. Which of the following description of the RP configuration is correct?
- A. When configuring a static RP, you need to configure the BSR advertisement RP information.
- B. When configuring a dynamic RP, you do not need to configure a BSR.
- C. When configuring a dynamic RP, you need to configure the BSR as the backup of the RP.
- D. When configuring a static BP, you need to specify the RP information on all PIM routers.
Answer: D
NEW QUESTION 193
As shown in the figure, the AS100 has two paths to access the AS400. By default, the best route is transmitted from the AS200. It is known that the path bandwidth to the AS400 through the AS300 is better. Therefore, doing the configuration on R2 as follows. After the configuration is complete, the optimal route is not changed. Which of the following operations can make the configuration take effect?
[R2]ip as-path-filter 1 permit ^400$ [R2]route-policy med permit node 10 [r2-route-policy]if-match as-path-filter 1 [r2-route-policy]apply cost 20
- A. Configure compare-different-as-med in the BGP process of R1.
- B. Configure deterministic-med under the BGP process of R1.
- C. Configure deterministic-med under the BGP process of R2
- D. Configure compare-different-as-med under the BGP process of R2.
Answer: A
NEW QUESTION 194
As shown in the figure, three switches SW1, SW2 and SW3, where SW1 is the root bridge, the link between SW1 and SW2 is congested, and SW2 cannot receive the configuration BPDU sent by the root bridge. Which spanning tree protection mechanism does the administrator need to configure to prevent link congestion?
- A. BPDU protection
- B. Loop protection
- C. Root protection
- D. TC-BPDU protection
Answer: B
NEW QUESTION 195
The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to the Silent interface, so what effect does this setting have?
- A. OSPF does not add routes learned from the interface to the local routing table.
- B. OSPF establishes available adjacencies through this interface.
- C. OSPF does not establish any adjacencies through the interface.
- D. OSPF will receive routing updates from neighbors
Answer: C
NEW QUESTION 196
Router R1 runs the 0SPF protocol. Use the display ip routing-table command to view the routing table of the Router R1. Which of the following description is correct about the 0SPF information in the routing table?
- A. In the routing table, the routing entry identified by the "0SPF" identifier can only pass the LSA of class 1.
- B. In the routing table, the routing entries identified by the "0_ASE" identifier can only be learned through routing.
- C. In the routing table, the routing entries identified by the OSPF identifier can be learned through 1/2/3/5 LSAs.
- D. In the routing table, the routing entries identified by the "0SPF" identifier can only be learned through the Type 3 LSA.
Answer: B
NEW QUESTION 197
Which of the following is a single package attack? (Multiple choice)
- A. DDoS attack
- B. Special control packet attack
- C. Malformed packet attack
- D. Scanning detection attacks
Answer: B,C,D
NEW QUESTION 198
We can use basic community-filters or advanced community-filters to filter BGP routes.
Which of the following tools make the advanced community-filter more flexible than the basic community- filters?
- A. IP-prefix
- B. AS-path-filter
- C. ACL
- D. Regular expression
Answer: D
NEW QUESTION 199
In broadcast network, the election of DIS is started after the neighbor relationship is established.
- A. True
- B. False
Answer: A
NEW QUESTION 200
Which of the following statements about the ISS protocol route aggregation is correct?
- A. Route aggregation can be configured and validated on all types of routers.
- B. Route aggregation can only be configured on the level--2 router to take effect.
- C. Route aggregation can only be configured on the level--1-2 router to take effect.
- D. Route aggregation can only be configured on the level--1 router to take effect.
Answer: A
NEW QUESTION 201
As shown in the figure, Between R1 and R2 are PPP links and the direct connection ports are not on the same network segment, but the R1 and R2 direct connection ports can communicate, and the Ethernet link cannot communicate under the same IP planning, what are the reasons? (Multiple Choice)
- A. R1 and R2 are connected to the POS port and learns the MAC address of the peer interface through LCP, and does not require the ARP request MAC address.
- B. The data packets of the interconnected POS interface of R1 and R2 do not need to encapsulate the Ethernet header, and do not need to use ARP to request the MAC address.
- C. R1 and R2 are connected to the POS port, and the 32-bit host route of the direct connection port of the other party is learned through IPCP.
- D. R1 and R2 are connected to the POS port, and the 24-bit subnet route of the direct connection port of the other party is learned through IPCP.
Answer: B,C
NEW QUESTION 202
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