최신 GB0-372-ENU 무료덤프

문제1

Two routers are connected together through a LAN to form a VRRP backup group. The VRRP timer is configured on each interface as follows:
[RTA-GigabitEthernet1 /0] vrrp vrid 1 timer advertise 5
[RTB-GigabitEthernet1/O] vrrp vrid 1 timer advertise 5
VRRP backup group 1 runs normally, RTA is the Master, and RTB is the Backup. If the device runs for a period of time and router RTA fails, the time for router RTB to change from Backup to Master may be?

A. 12 seconds

B. 5 seconds

C. 20 seconds

D. 3 seconds

정답: A

문제2

What are the main application directions of SDN at present? (Multiple choice)

A. Wide Area Network

B. Local Area Network

C. Campus Network

D. Data Center

정답: A,C,D

문제3

Regarding RP and BSR, which of the following is correct? (Multiple choice)

A. BSR selects the best RP for each multicast group

B. There can be only one BSR in a PIM-SM domain

C. RP in PIM-SM can be manually specified or dynamically elected.

D. BSR is responsible for collecting and publishing RP information in the PIM-SM domain

정답: B,C,D

문제4

The figure shows the application of SmartLink and RRPP hybrid networking. In this networking environment, the RRPP protocol is enabled on switches SWA, SWB, SWC, and SWD to provide link redundancy backup. What can we learn from the above information? (Multiple choice)

A. Switches SWC, SWD, and SWE can use SmartLink technology to avoid loops

B. Switches SWC, SWD, and SWE use the MSTP technology. The link between switch SWE and switches SWC and SWD will be blocked.

C. Switches SWC, SWD, and SWE use SmartLink technology. The link between switch SWE and switch SWC and switch SWD will be blocked.

D. Switches SWC, SWD, and SWE can use MSTP technology to avoid loops

정답: A,C

문제5

In BFD echo working mode, the other end needs to configure which of the following?

A. Configure bfd session init-mode active in the system view

B. No configuration is required

C. Configure bfd echo enable on the interface

D. Configure bfd demand enable on the interface

정답: C

문제6

In an SDN network, which protocol packets may be sent to the vCFC and processed by the VCFC?
(Multiple choice)

A. RARP

B. EVPN Update

C. LLDP

D. STP

정답: A,C

문제7

The figure shows the networking application of RRPP. The customer LAN switches SWA, SWB, SWC, and SWD form the RRPP ring main ring 1, switches SWB, SWC, and SWE form sub-ring 2, and switches SWB, SWC, and SWF form sub-ring 3. If switch SWE is the master node of sub-ring 2, SWF is the master node of sub-ring 3, and switch SWB is the edge node of sub-ring 2 and sub-ring 3, in order to eliminate the defect of broadcast storm under specific conditions of RRPP dual-homing networking, which of the following can be known from the above information?

A. If the link between switch SWA and switch SWD is down, the edge port on switch SWB will be blocked.

B. If the link between switch SWA and switch SWB is down, and the link between switch SWA and switch SWD is down, the edge port on switch SWB will be blocked.

C. If the link between switch SWA and switch SWB is down, and the link between switch SWB and switch SWC is down, the edge port on switch SWB will be blocked.

D. If the link between switch SWB and switch SWC is in Down state, the edge port on switch SWB will be blocked.

정답: C

문제8

Two routers are connected together through a LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
IP address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
Vrrp vrid 1 priority 120 vrrp vrid 1 preempt-mode
Vrrp vrid 1 track interface serial0/1 reduced 30
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254 vrrp vrid 1 preempt-mode
If a DOWN/UP event occurs on the RTA serial port Serial0/1 during network operation, what can we learn from the above information?

A. During the DOWN/UP period of the RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC will not change.

B. During the RTA serial port Serial0/1 DOWN/UP period, the router that responds to the LAN PC ARP request changes once

C. During the DOWN/UP period of RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC changes twice

D. During the DOWN/UP period of RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC changes 3 times

정답: C

문제9

Switch SWA uses the factory default configuration. Now configure the Ethernet 1/0/1 port of switch SWA as a Trunk port, with PVID of VLAN 20 and allowing VLAN 10.
which of the following is correct? (Multiple choice)

A. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vian 20
[SWA-vlan20] quit
[SWA] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk pvid vlan 20
[SWA-Ethernet1/0/1] port trunk permit vlan 10

B. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] quit
[SWA] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port access vlan 20
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk permit vlan 10

C. [SWA] interfaceEthernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk pvid vlan 20
[SWA-Ethernet1/0/1] port trunk permit vlan 10
[SWA-Ethernet1/0/1] quit
[SWA] vlan 10
[SWA-vlan10] quit
[SWA] vlan 20

D. [SWA] vlan10
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] port Ethernet 1/0/1
[SWA-vlan20] quit
[SWA ] interface Ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type trunk
[SWA-Ethernet1/0/1] port trunk permit vlan 10

정답: A,C

문제10

A customer's network has deployed 802.1X. The customer hopes to control the authorization status of the port by configuring the access control mode of the port configuration to auto. Which of the following descriptions of the auto mode is incorrect? (Multiple choice)

A. In this mode, the initial state only allows EAPOL messages to be sent and received

B. The initial state of the port in this mode is unauthorized

C. In this mode, the initial state only allows EAP-TLS message sending and receiving

D. The initial state of the port in this mode is the authorized state

정답: C,D

문제11

In STP calculations, which parameters in the configuration BPDU may be used to determine the port role?

A. Root ID, Root Path Cost, Bridge ID, Port ID

B. Root ID, Root Path Cost, Bridge ID, Designate Port ID, Bridge Port ID

C. BPDU Type, Root ID, Root Path Cost, Bridge ID

D. Flags, Root Path Cost, Bridge ID, Port ID

정답: A

문제12

As shown in the figure, there is no connection between SWA and SWB at the beginning. SWA and SWB enable RSTP. When the topology is stable, the ports connecting SWA and SWB assume that SWA will become the new root bridge. Which of the following statements are correct? (Multiple choice)

A. The designated port of SWB will continue the P/A handshake process with the downstream switch

B. After receiving the Agreement message sent by SWB, SWA's port E1/0/1 will immediately enter the forwarding state.

C. After SWB completes the synchronization process, it will reply with an Agreement message to SWA, and its port E1/0/1 will immediately enter the forwarding state.

D. During the P/A process, no timer will be used, so the designated port can quickly enter the forwarding state, thereby achieving rapid network convergence.

정답: A,B,C,D

문제13

In the network shown in the figure, the interconnection lines between RT1, RT2, RT3 and RT4 are all 1000M links except for the shared Ethernet part which is a 10M link. OSPF protocol is run to make the routes interoperable. The four routers all run PIMSM protocol, and the RP is 1.1.1.1. RT1 and RT2 are connected to receivers on their downstream interfaces, and IGMP is enabled on the corresponding interfaces. Then, when the receiver sends a group join request, which of the following routers have (*, G) entries? (Multiple choice)

A. RT1

B. RT4

C. RT3

D. RT2

정답: A,C,D

문제14

Regarding the STP port status, which of the following is correct? (Multiple choice)

A. When the port is in the Listening state or the Learning state, if the port role changes to an Alternate port, the port state will directly change to Blocking.

B. Regardless of the role the port ultimately determines, the time it stays in the Listening state and the Learning state is the length of one Forward Delay.

C. When the port is in the Learning state, it starts learning MAC addresses but does not forward data.

D. When the port is in the Listening state, it will receive configuration BPDUs and perform calculations, but will not send configuration BPDUs.

정답: B,C

문제15

Which of the request operations specified in the SNMP v1 protocol are atomic?
Atomicity means that failure of any variable in the request will cause failure of all variable operations in this request. (Select one or more)

A. SetRequest

B. GetNextRequest

C. GetRequest

D. There are no atomic operations

정답: C

문제16

When a switch running MSTP and a switch running RSTP work together, which of the following is correct? (Multiple choice)

A. The MSTP switch will parse the RSTBPDU into an MST BPDU, where IRPC is 0

B. MSTP switches and RSTP switches can belong to the same MST region

C. The MSTP switch will regard the RSTP switch as an MSTP domain consisting of a single switch.

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.

정답: A,C

문제17

Which of the following statements about ring network technology is correct?

A. The convergence time of RRPP is independent of the number of nodes on the ring network and can be applied to networks with larger network diameters.

B. RRPP (Rapid Ring Protection Protocol) is a network layer protocol specifically used for Ethernet rings.

C. Ethernet ring technology is becoming more mature and low-cost. Technologies to solve the Layer 2 network loop problem include RPR and RRPP.

D. RRPR requires dedicated hardware, so the cost is higher

정답: A

문제18

Regarding multicast maintenance commands, which of the following is correct? (Multiple choice)

A. The multicast forwarding table is directly used to guide the forwarding of multicast data. By viewing this table, you can understand the forwarding status of multicast data.

B. By viewing the PIM routing table, you can learn about the (S, G) or (*, G) table entries.

C. By viewing the IGMP group information, you can learn about the relevant information of a multicast group maintained by the interface.

D. The multicast routing table is the basis for multicast data forwarding. By viewing the table, you can understand the establishment of (S, G) entries, etc.

정답: A,B,C,D

문제19

The Ethernet1/0/1 port of switch SWA is configured as follows:
Interface Ethernet 1/0/1 port link-type trunk
Port trunk permit vlan 10 port trunk pvid vlan 20
Now we need to change the Ethernet 1/0/1 port of switch SWA to a Hybrid port, with PVID of VLAN 20, and tag the data frames sent from VLAN 10. Which of the following configuration processes is correct?
(Multiple choice)

A. [SWA-Ethernet1/0/1] port link-type hybrid

B. [SWA-Ethernet1/0/1] undoportlink-type
[SWA-Ethernet1/0/1] portlink-type hybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged

C. None of the above is correct

D. [SWA-Ethernet1/0/1] portlink-type access
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged

E. [SWA-Ethernet1/0/1] portlink-type access
[SWA-Ethernet1/0/1] port access vlan 20
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged

정답: B,D,E

문제20

Which of the following statements about VCFC virtual ports are correct? (Multiple choice)

A. Virtual port online means that after VCFC receives ARP, DHCP and other messages sent by the physical server or virtual machine, it sets the virtual port status to UP and updates the relevant information.

B. A virtual port represents a physical server or virtual machine in an SDN network.

C. Different networking solutions have different virtual port online processes and conditions.

D. Virtual port is the smallest unit in the Openstack virtual network model

정답: B,C,D

최신 GB0-372-ENU 무료덤프 - H3CSE-RS-SW

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