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NEW QUESTION # 189
When a switch running MSTP and a switch running RSTP work together, which of the following is correct? (Multiple choice)
- A. MSTP switches and RSTP switches can belong to the same MST region
- B. The MSTP switch will regard the RSTP switch as an MSTP domain consisting of a single switch.
- C. The MSTP switch will parse the RSTBPDU into an MST BPDU, where IRPC is 0
- D. The RSTP switch will regard the MST region as a logical switch, and the bridge ID is the ID of the switch directly connected to the RSTP switch in the MST region.
Answer: B,C
NEW QUESTION # 190
In the switching network shown in the figure, VLAN10 is set as Isolate -user- vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2 and VLAN20 are created on switch SWB, and VLAN20 is set as Isolate-user-vlan, and VLAN4 is set as Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, check the MAC address table on SWA, and you can judge that PCA belongs to _ ______.
- A. VLAN 4
- B. VLAN 3
- C. VLAN 2
- D. VLAN 10
- E. VLAN 20
- F. VLAN 1
Answer: C
NEW QUESTION # 191
Which of the following VLAN division methods can only be configured on the Hybrid port? (Multiple choice)
- A. Protocol-based VLAN
- B. VLAN based on IP subnet
- C. Port-based VLAN
Answer: A,B
NEW QUESTION # 192
Which of the following descriptions of the precautions for using mirror configuration on H3C S series switches are correct? (Multiple choice)
- A. The same port can be configured in multiple mirroring groups
- B. The reflector port of the remote mirror can also be used as a service port
- C. The Probe VLAN of the remote port mirroring must be a manually created static VLAN
- D. A member port of an aggregation group cannot be configured as a destination port of a mirroring group.
Answer: C,D
NEW QUESTION # 193
The improvements of SNMP vc2 compared with SNMPV1 protocol include which of the following?
(Multiple choice)
- A. Added the GETBULK REQUEST operation, which can request large amounts of data at once
- B. All operations become non-atomic, greatly improving the effectiveness of protocol message interaction
- C. Provide more error codes to express errors more accurately and facilitate problem location
- D. Provide more reliable security mechanism, safer to use
Answer: A
NEW QUESTION # 194
Which of the following statements is correct about the fast convergence mechanism of MSTP?
(Multiple choice)
- A. MSTP supports all the fast convergence mechanisms of RSTP
- B. MSTP can work with RSTP switches to achieve fast convergence
- C. In MSTP, edge ports can be specified for instances, that is, a port can be an edge port in some instances and a normal port in some instances.
- D. All fast convergence mechanisms of MSTP and RSTP are the same
Answer: A,B
NEW QUESTION # 195
Regarding the stpmcheck command in spanning tree configuration, which of the following are the correct statements?
- A. This command is used when RSTP switches and MSTP switches are interconnected.
- B. By running this command on a port of an RSTP or MSTP switch, you can switch the spanning tree mode of the port to STP.
- C. This command is used when switches from different manufacturers are interconnected and MSTP is running to check summary information.
- D. This command is used when the switch port running RSTP or MSTP is connected to the STP device.
Answer: D
NEW QUESTION # 196
In the network shown in the figure, the PIMSM protocol is running between RT1, RT2 and RT3, the RP is 1.1.1.1, and there is a multicast source connected to the downstream receiver RT3. Check the RT3 unicast routing table as follows:
[RT3] display ip routing-table Routing Tables: Public Destinations: 10 Routes: 10 Destination/MaskProtoPreCost NextHop Interface
1.1.1.1/32 OSPF 10 1562 192.168.2.1 s0/2/1
127.0.0.0/8 Direct 00 127.0.0.1 In Loop 0
127.0.0.1/32 Direct 00 127.0.0.1 In Loop 0
192.168.0.0/30 Direct 00 192.168.0.2 S0/2/0
192.168.0.1/32 Direct 00 192.168.0.1 S0/2/0
192.168.0.2/32 Direct 00 127.0.0.1 In Loop 0
192.168.1.0/30 OSPF 10 3 124 192.168.2.1 S0/2/1
192.168.2.0/30 Direct 00 192.168.2.2 so/2/1
192.168.2.1/32 Direct 00 192.168.2.1 so/2/1
192.168.2.2/32 Direct 00 127.0.0.1 In Loop 0
Then, when the RP sends a registration stop message, which of the following routers have (S, G) entries? (Multiple choice)
- A. RT3
- B. RT1
- C. RT2
Answer: A,C
NEW QUESTION # 197
Which of the following statements about the basic concepts of MSTP is correct? (Multiple choice)
- A. The root of IST is the bridge closest to the total root in IST
- B. An MSTI instance can map multiple VLANs, and the VLAN mapping relationships in different MST regions can be different
- C. IST is a fragment of CIST in the MST region. The root of IST is the bridge with the highest priority in the MST region.
- D. An MST region can contain multiple MSTI instances, and different MST regions can contain different MSTI instances.
Answer: A,B,C,D
NEW QUESTION # 198
AA is a management mechanism for network security. What security functions can it provide?
(Multiple choice)
- A. Authentication
- B. Access
- C. Accounting
- D. Control (ACL)
Answer: A,C
NEW QUESTION # 199
As shown in the figure, SWA, SWB and SWC enable STP and SWB's MAC address is smaller than SWA's MAC address. If the topology converges, SWB's bridge priority is set to 0. Which of the following statements are correct? (Multiple choice)
- A. After the priority is adjusted, SWB will immediately send configuration BPDUs with itself as the root from ports E0/1 and E0/2.
- B. SWA will immediately determine that port E0/1 is the root port
- C. By default, the topology will converge again after 30 seconds.
- D. After SWC receives the configuration BPDU sent by SWB, it will not update immediately, but will wait for the locally saved configuration BPDU to age before updating.
Answer: A,B,C
NEW QUESTION # 200
Which of the following descriptions about secure management networking are correct?
- A. Traffic between firewalls and load balancers is directly interconnected through the secure intranet without going through a gateway
- B. Security devices and gateways communicate with each other through VXLAN
- C. Hardware load balancing is mounted on the gateway
- D. Hardware firewall mounted on the gateway
Answer: C
NEW QUESTION # 201
If the customer requires the core switch to use Ethernet link aggregation technology, which of the following is correct? (Multiple choice)
- A. Aggregation ports support Layer 2 aggregation ports and Layer 3 aggregation ports
- B. Aggregation ports are physical ports and require the purchase of Ethernet link aggregation cards.
- C. An aggregate port is a logical port composed of multiple logical ports. It is not necessary to purchase an Ethernet link aggregation card.
- D. Aggregation ports are logical ports composed of multiple physical ports. No need to purchase Ethernet link aggregation cards
Answer: A,D
NEW QUESTION # 202
The figure shows the networking application of RRPP. The customer LAN switches SWA, SWB, SWC, and SWD form the RRPP ring main ring 1, and the switches SWB, SWC, and SWE form the sub-ring 2.
If the switching SWE is the master node of sub-ring 2, which of the following can be known from the above information?
- A. If the link between switch SWA and switch SWB is down, and the link between switch SWA and switch SWD is down, switch SWE will release the secondary port.
- B. If the link between switch SWA and switch SWB is down, switch SWE will release the secondary port
- C. If the link between switch SWB and switch SWC is down, switch SWE will release the secondary port
- D. If the link between switch SWA and switch SWB is down, and the link between switch SWB and switch SWC is down, switch SWE will release the secondary port.
Answer: D
NEW QUESTION # 203
Which of the following statements about the PIM joining process is correct? (Multiple choice)
- A. The multicast join path of DR in PIMSSM is the optimal forwarding path from the source to DR
- B. The multicast join path of DR in PIMSM is the optimal forwarding path from the source to DR
- C. The group source joining path of RP in PIMSM is the optimal forwarding path from the source to the RP
- D. The multicast join path of DR in PIMDM is the optimal forwarding path from the source to DR
Answer: A
NEW QUESTION # 204
As shown in the figure, each switch enables RSTP. Assuming that the link cost values are the same, which of the following is correct? (Multiple choice)
- A. If RSTP of both SWB and SWC is cancelled, port EO/2 of SWA will become the backup port.
- B. If RSTP is disabled on SWB, port EO/1 of SWC will become the root port
- C. SWB's port E0/1 is an alternate port.
- D. Network computation convergence does not require waiting for twice the Forward Delay time
Answer: A,B,C,D
NEW QUESTION # 205
Which of the following messages are TACACS+ authentication messages? (Multiple choice)
- A. Request
- B. Continue
- C. Response
- D. start
Answer: B,D
NEW QUESTION # 206
The figure shows the networking of Smart Link and Monitor Link cascade. The Smart Link group on switch SWH is used as the uplink port of the Monitor Link group on switch SWH, and the peer port of the downlink port of the Monitor Link group is the master port of the Smart Link group on switch SWJ. The uplink SWD and SWE ports of switch SWH are the ports of the Smart Link group. What can we learn from the above information?
- A. If the links of the upstream switches SWD and SWE of switch SWH are both in Down state, the primary port of the Smart Link group of switch SWJ will be switched to the secondary port.
- B. If the link of switch SWH to switch SWE is down, the primary port of the Smart Link group of switch SWJ will switch to the secondary port.
- C. The Smart Link group status of switch SWJ has nothing to do with switch SWH
- D. If the link of switch SWH to switch SWD is down, the master port of switch SWJ Smart Link group will switch to the slave port.
Answer: A
NEW QUESTION # 207
The GARP messages used in information exchange between GARP application entities are?
(Multiple choice)
- A. JoinAll
- B. Empty
- C. JoinEmpty
- D. Join
- E. Leave
- F. LeaveAll
- G. LeaveEmpty
Answer: B,C,D,E,F
NEW QUESTION # 208
The SSH protocol framework consists of multiple protocols . Which of the following is a correct description of these protocols and their roles in the SSH framework? (Multiple choice)
- A. User authentication protocol completes the client's identity authentication
- B. The user encryption protocol mainly provides data confidentiality support and divides the encrypted information into several logical channels for multiplexing
- C. Link layer protocol completes link availability and establishes encrypted channels and logical channels
- D. The transport layer protocol can provide support for server authentication and information integrity
Answer: A,D
NEW QUESTION # 209
The advantages of the hierarchical network model include_____.(Multiple choice)
- A. Facilitate network maintenance
- B. Improve network throughput
- C. Reduce end-to-end latency
- D. Enhance network scalability
Answer: A,D
NEW QUESTION # 210
What are the following ways to connect traditional networks to SDN networks? (Multiple choice)
- A. Connect to the SDN network through routing and other methods on the Spine device
- B. Configure in-band management VLAN on VCFC
- C. Access the SDN network through VLAN-VXLAN mapping on the Leaf device
- D. Access the SDN network egress firewall through NAT, VPN, routing, etc.
Answer: A,C,D
NEW QUESTION # 211
Which of the following statements about BSR and RP in PIMSM is correct? (Multiple choice)
- A. When C-BSR is elected, the priority is compared first, and then the IP address of the bootstrap message is compared.
- B. After receiving the C-RP announcement message, the BSR calculates the RP to be selected for each multicast group based on the relationship between the RP and the multicast group, and multicasts the calculation result.
- C. C-RP routers periodically send announcement messages in multicast mode
- D. BSR is generated through an automatic election process between C-BSRs
Answer: A,D
NEW QUESTION # 212
VLAN 10 has been created on switch SWA. To use one command to add Ethernet 1/0/1, Ethernet
1/0/2, Ethernet 1/0/3, and Ethernet 1/0/5 ports to VLAN 10, which of the following is correct? (Multiple choice)
- A. [SWA-vlan10] port Ethernet 1/0/1 to 1/0/3 Ethernet1/0/5
- B. [SWA-vlan10] port Ethernet 1/0/1 to Ethernet 1/0/3 Ethernet1/0/5
- C. [SWA-vlan10] port Ethernet 1/0/1 Ethernet 1/0/2 Ethernet 1/o/3 Ethernet1/0/5
- D. [SWA-vlan10] port from Ethernet 1/0/1 to Ethernet 1/0/3 Ethernet1/0/5
Answer: B,C
NEW QUESTION # 213
In large LANs, commonly used link backup technologies include? (Multiple choice)
- A. STP
- B. RRPP
- C. Smart Link
- D. Link aggregation
Answer: A,B,C,D
NEW QUESTION # 214
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