GB0-371-ENU無料問題集「H3C Constructing H3C High-Performance Campus Networks」

質問 1

In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device as shown in the figure, which of the following statements is correct (choose one or more)

（A）The PCA packet comes out of the GigabitEthem1/0/3 port of SWA and enters the GigabitEthem1/0/4 port of SWB without VLAN tag

（B）SWB packets from GigabitEthernet1/0/3 of SWA come out of GigabitEthem1/0/1 without VLAN

（C）When SWB accesses PCA, after the packet comes out of the GigabitEthem1/0/4 port of SWB, the VLAN Tag carried is VLAN20

（D）The PCA packet enters from the GigabitEthe1/0/1 port of SWA, and the VLAN Tag carried after it exits the GigabitEthem1/0/3 port is VLAN 10

正解：B 解答を投票する

質問 2

A customer wants to deploy 802.1X in the local area network to improve access security. At the same time, the customer wants to temporarily close the illegal packets received on the port for 5 minutes through the port security feature to prevent illegal users from accessing the network. The following can be used Which features are implemented

（A）InstrusionProtection features

（B）ntk temporary feature

（C）Trap features

（D）NeedToKnow features

正解：A 解答を投票する

質問 3

Regarding the bridge ID of STP, which statement is correct?

（A）The MAC addresses of SWA and SWB are 00-E0-FC-00-00-11 and 00-E0-FC-11-00-11, and the priority of the two are 32768 and 4096 respectively. When SWA and SWB are used After ring networking and spanning tree protocol is enabled, SWA will become the root bridge

（B）The bridge with the smallest bridge ID in the network will eventually become the root bridge after STP calculation

（C）The length of the bridge priority field is 2 bytes, so the value range of the bridge priority is 0-65535

（D）Bridge ID is composed of bridge MAC address and priority field. When comparing bridge ID, compare the MAC address first. The smaller MAC address value is preferred.

正解：B 解答を投票する

質問 4

Regarding the relationship between RSTP and STP, the correct statement is

（A）RSTP can implement load sharing of data of different VLANs on Trunk links on the basis of STP

（B）The switch running RSTP can work with the switch running STP and improve the convergence time of STP

（C）RSTP has all the functions of STP, but it only uses one type of BPDU

（D）RSTP is defined in the old EE802.1 D standard, and its protocol thinking is the same as STP, but the convergence time is improved

正解：C 解答を投票する

質問 5

After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:
[SWA]display interface Ethernet 1/0/1
Ethernet1/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0(sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
It can be judged from the above output

（A）Port Ethemet1/0/1 is a trunk port, allowing data frames of any VLAN to pass through

（B）Port Ethemet1/OM is a trunk port, which only allows data from VLAN 1 and VLAN 10 to pass through

（C）Data frames without VLAN tags will be tagged with VLAN1 when they enter port Ethernet1/0/1

（D）Data reconnaissance with VLAN1 tag will not be stripped when it leaves port Ethemet1/0/1

正解：A、D 解答を投票する

質問 6

The following are functions of the convergence layer (choose one or more)

（A）Possess a large number of interfaces for connecting with end user computers

（B）Complex routing strategy

（C）High-speed packet switching

（D）Access security control

正解：B 解答を投票する

質問 7

The host PCA, PCB and PCC are respectively connected to the GigabitEthernet1/0/1 port of the switch SWA UP, Ethernet1/0/2 and Ethernet1/0/3 ports, and their addresses are in the same network segment, i exchange & SWA are configured
[SWA]vlan 10
[SWA-vlan10]port ethernet 1/0/1
[SWA-vlan10]quit
[SWA]vlan 20
[SWA-vlan20]port ethernet 1/0/2
[SWA-vlan20]quit
[SWA]vlan 30
[SWA-vlan30]port ethernet 1/0/3
[SWA-vlan30]quit
[SWA]interface ethernet 1/0/1
[SWA-Ethernet1/0/1]port link-type hybrid
[SWA-Ethernet1 /0/1] port hybrid vlan 10 30 untagged
[SWA-Ethernet1/0/1]quit
[SWA]interface ethernet 1/0/2
[SWA-Ethernet1/0/2]port link-type hybrid
[SWA-Ethernet1 /0/2]port hybrid vlan 20 30 untagged
[SWA-Ethernet1/0/2]quit
[SWA]interface ethernet 1/0/3
[SWA-Ethernet1/0/3]port link-type hybrid
[SWA-Ethernet1 /0/3]port hybrid vlan 10 20 30 untagged
-Can judge __ (choose one or more) based on the above information

（A）PCB and PCC can communicate directly

（B）Two PCs cannot communicate with each other

（C）Intercommunication between PCA and PCB

（D）Intercommunication between PCA and PCC

（E）The configuration command is incorrect

正解：A、D 解答を投票する

質問 8

Two routers are connected together through a LAN to form a VRRP backup group, and 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 occurred on the RTA serial port Serial0/1 during network operation, you can know

（A）During the RTA serial port Serial0/1 DOWN/UP time period, the router that responds to the LAN PC ARP request changes twice

（B）During the RTA serial port Serial0/1 DOWN/UP time period, the router that responds to the LAN PC ARP request will not change

（C）During the RTA serial port Serial0/1 DOWN/UP time period, the router that responds to the LAN PC ARP request changes once

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

正解：A 解答を投票する

質問 9

The customer's two switches SWA and SWB are connected together through a LAN. The two switches SWA and SWB form a link aggregation group. Check the aggregation group status on the SWA as follows:
[SWA]display link-aggregation verbose
Loadsharing Type: Shar - Loadsharing, NonS - Non-Loadsharing
Port Status: S - Selected, U - Unselected
Flags: A - LACP_Activity, B - LACP_Timeout, C - Aggregation,
D - Synchronization, E - Collecting, F - Distributing,
G - Defaulted, H - Expired
System ID: 0x8000, 000f-e245-6bc0
Local:
Port StatusPriority Oper-KeyFlag
GE1/0/1S 327682 {ACDEF}KOKOMADE
GE1/0/2S 327682 {ACDEF}KOKOMADE
GE1/0/3S 327682 {ACDEF}KOKOMADE
Remote:
ActorPartner Priority Oper-KeySystemID Flag
GE1/0/125327682 0x8000, 000f-e23d-59f0 {ACDEF}KOKOMADE
GE1/0/226327682 0x8000 000f-e23d-59f0 {ACDEF}KOKOMADE
GE1/0/327327682 0x8000 000f-e23d-59f0 {ACDEF}KOKOMADE
It can be known from the above information

（A）Link aggregation port bandwidth size 2G

（B）The static aggregation group is established between the switch SWA and the switch SWB

（C）The dynamic aggregation group is established between the switch SWA and the switch SWB

（D）LACP priority is 0x8001

正解：C 解答を投票する

質問 10

As shown in the figure, there are two group member hosts Client1 and 3 running different versions of the IGMP protocol on the shared network segment, and there is also an IGMPV2 router Router, then the following statement is correct

（A）The host report of CIient2 suppresses the host report of Client1

（B）Router works in accordance with IGMPv1 protocol

（C）Router works according to IGMPv2 protocol

（D）The host report of CIient1 suppresses the host report of Client2

正解：B、D 解答を投票する

質問 11

The figure shows the application of SmartLink and RRPP hybrid networking. In this networking environment, the RRPP protocol is enabled on the switch SWA, switch SWB, switch SWC and switch SWD to provide link redundancy backup. From the above information, you can know

（A）Switch SWC, switch SWD, switch SWE can use SmartLink technology to avoid loop

（B）Switch SWC, switch SWD, switch SWE can use MSTP technology to avoid loops

（C）Switch SWC, switch SWD, switch SWE use SmartLink technology, switch SWE uplink switch SWC, switch SWD link will block one

（D）Switch SWC, switch SWD, switch SWE use MSTP technology, switch SWE uplink switch SWC, switch SWD link will block one

正解：A、C 解答を投票する

質問 12

What is the correct statement about the MSTP calculation process?

（A）After the MSTI calculation is completed, the same physical port may have different roles in different instances

（B）After the MSTI calculation is completed, the data flow between the domain and the domain must pass through the Master port

（C）The mapping relationship between VLANs and instances in different MST regions is independent and can be different or the same

（D）Root bridge of MSTI The root bridge of IST can be the same switch

正解：A、C、D 解答を投票する

質問 13

The following statements about the registration process of PIM SM are correct (choose one or more)

（A）When a multicast source initially sends traffic, the connected DR will encapsulate several empty Register messages to register with the RP

（B）After the RP normally receives the multicast forwarded traffic from the multicast source, it forwards the multicast to its downstream interface until the multicast receiver, forming an RPT from the RP to the multicast receiver along the way.

（C）After the RP receives the source registration message for the first time, it will send a (*, G) join message to the multicast source and establish (*, G) entries along the way

（D）Unlike the PUSH method of PIM DM, in PIM SM, the multicast source only starts to send multicast traffic when there are downstream receivers

正解：B 解答を投票する

質問 14

When the IGMPV3 host wishes to leave the multicast group G, the host will actively send a Membership Report message, and the group record contained in the message is

（A）TO_IN (Null, G)

（B）TO_EX (A, G)

（C）TO_IN (A, G)

（D）TO_EX (Null, G)

正解：A 解答を投票する

質問 15

Regarding the MSTP BPDU format, the correct statement is

（A）MSTP BPDU consists of RSTBPDU field and MST specific field

（B）If the MST region is regarded as a logically running RSTP switch, the CIST external path cost is equivalent to the root path cost of the RSTP switch

（C）If the MST region is regarded as a switch that logically runs RSTP, the CIST region root ID is equivalent to the designated bridge ID of the RSTP switch, usually the ID is the bridge ID with the smallest value in the MST region

（D）Calculating CST only needs the value of RSTBPDU field

正解：A、B、D 解答を投票する

質問 16

The switches SWA and SWB are connected together through two optical fiber Gigabit Ethernet links, and the switch SWA has the following interface configuration:
[SWA]interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1]gvrp
[SWA-GigabitEthernet1/0/1]port link-type trunk
[SWA-GigabitEthernet1/0/1]port trunk permit vlan 1 10
[SWA]interface GigabitEthernet 1/0/2
[SWA-GigabitEthernet1/0/2]port link-type trunk
[SWA-GigabitEthernet1/0/2]port trunk permit vlan 1 10
If you want to configure link aggregation to aggregate these two links together, if the configuration on the SWB is correct, you can know from the above information

（A）After link aggregation is configured on both SWA and SWB, if both SWA and SWB enable MSTP on the aggregation port, GigabitEthernet1/0/1 and GigabitEthe1/0/2 can participate in forwarding

（B）Only when GigabitEthernet1/0/2 and Gigabit1/0/1 allow all VLANs to pass, they can join the same aggregation group

（C）Only by changing the configuration of GigabitEthe1/0/2 to be consistent with GigabitEthe1/0/1, can they join the same aggregation group

（D）After link aggregation is configured on SWASWB, if both SWA and SWB enable MSTP on the aggregation port, one of GigabitEthe1/0/1 and GigabitEthe1/0/2 will be blocked

正解：A 解答を投票する

質問 17

Regarding the configuration of bridge priority in spanning tree, the following statements are correct.

（A）If the switch is not configured with the priority of the bridge, the default value is 32768

（B）The smaller the priority value, the lower the priority of the bridge

（C）The step size of bridge priority is 4096

（D）The priority of the bridge is 16 bits in total, and the value range is 0-65535

正解：A、C 解答を投票する

質問 18

The figure shows the stable topology after STP calculation and convergence, then the following statements are correct:

（A）The BPDU is a configuration BPDU, the destination address is 01-80-C2-00-00-0

（B）The port saves the aging time of the BPDU as MaxAge

（C）The sending period of this BPDU is HelloTime

（D）SWA is the root bridge in the network

正解：A、B、C、D 解答を投票する

質問 19

As the network management director of a certain company, Mr. Wang adheres to the following network technology and network equipment selection and application principles in network construction. As a network engineer, you think the selection and application of those technologies are not good for network management.

（A）The network equipment is provided by at least three different manufacturers

（B）The routing protocol must choose a standard dynamic routing protocol

（C）Each manufacturer's network equipment must use its own network management system for management

（D）All devices are required to support standard topology discovery protocol

正解：A、C 解答を投票する

GB0-371-ENU 無料問題集「H3C Constructing H3C High-Performance Campus Networks」

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