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NEW QUESTION 42
The mirroring technology that can achieve across multiple switches is
- A. Remote mirroring
- B. Stream mirroring
- C. Port mirroring
- D. Local mirror
Answer: A
NEW QUESTION 43
The Ethemet1/0/1 port configuration of the switch SWA is as follows:
interface Ethernet 1/0/1
port link-type trunk
port trunk permit vlan 10
port trunk pvid vlan 20
Now you need to modify the Ethernet 1/0/1 port of the switch SWA to a Hybrid port, the PVID is VLAN20, and the data frame of VLAN10 is tagged, then the following configuration process is correct (choose one or more)
- A. [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
- 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. [SWA-Ethernet1/0/1]port link-type hybrid
- D. None of the above is correct
- 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
Answer: A,B,E
NEW QUESTION 44
In the PIM-DM network as shown in the figure, part of the unicast routing table of routers RT1 and RT2 is as follows
<RT1>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
10.1.1.0/30 Direct 0010.1.1.2Port1
10.1.1.1/32 Direct 0010.1.1.1Port1
10.1.1.2/32 Direct 00127.0.0.1 InLoopO
11.1.1.0/30 Direct 0011.1.1.1Port2
11.1.1.1/32 Direct 00127.0.0.1 InLoopO
12.1.1.0/30 Direct 0012.1.1.1Port3
12.1.1.1/32 Direct 00127.0.0.1 InLoopO
100.1.1.0/240SPF 10 1563 10.1.1.1 Portl
127.0.0.0/8 Direct 00127.0.0.1 InLoopO
127.0.0.1/32Direct 00127.0.0.1 InLoopO
100.1.0.0/160SPF 10 311.1.1.2 Port2
<RT2>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
20.1.1.0/30 Direct 0020.1.1.2Port1
20.1.1.1/32 Direct 0020.1.1.1 Portl
20.1.1.2/32 Direct 00127.0.0.1 InLoopO
11.1.1.0/30 Direct 0011.1.1.2Port2
11.1.1.2/32 Direct 00127.0.0.1 InLoopO
22.1.1.0/30 Direct 0022.1.1.1Port3
22.1.1.1/32 Direct 00127.0.0.1 InLoopO
100.1.1.0/240SPF 10 1564 11.1.1.1 Port2
127.0.0.0/8 Direct 00127.0.0.1 InLoopO
127.0.0.1/32Direct 00127.0.0.1 InLoopO
100.1.0.0/160SPF 10 220.1.1.1 Portl
Then, the (S, G) entry and exit interface lists of routers RT1 and RT2 are respectively
- A. RT2 outgoing interface list: Port2, Port3
- B. RT1 incoming interface list: Portl
- C. RT1 outgoing interface list: Port2, Port3
- D. RT2 incoming interface list: Portl
Answer: B,C
NEW QUESTION 45
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. Router works in accordance with IGMPv1 protocol
- B. The host report of CIient1 suppresses the host report of Client2
- C. The host report of CIient2 suppresses the host report of Client1
- D. Router works according to IGMPv2 protocol
Answer: A,B
NEW QUESTION 46
The customer's two routers are connected together through a LAN, and the two routers form a VRRP backup group and the related configuration 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
[RTB-GigabitEthernet1/0]display this
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
RTA router GigabitEthernet1/0 interface MAC is 000f-4300-0001, RTB router GigabitEthernet1/0 interface MAC is 000f-4300-0002 If RTA adopts aggregation group Real-mac mode, RTB adopts aggregation group virtual-mac mode, from the above information Learned
- A. RTA and RTB cannot establish VRRP group
- B. If the gateway MAC received by the LAN PC is 0000-5e00-0101, the router RTB is in the VRRP Master state
- C. The gateway MAC received by the LAN PC is 000f-4300-0001
- D. The gateway MAC received by the LAN PC is 0000-5e00-0101
Answer: B,C
NEW QUESTION 47
The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1, and the switch SWA has the following configuration information:
[SWA] rrpp domain 1
[SWA-rrpp-domain1] control-vlan 4092
If the switch SWA ports Gigabitethernet 1/0/1 and Gigabitethernet 1/0/2 are connected to the RRPP ring, we can know from the above information
- A. If SWA is a transit node, when the RRPP ring is in a healthy state, the SWA main port only allows VLAN4092 to pass
- B. If SWA is a transmission node, the functions of Gigabitethernet1/0/1 and Gigabitethernet1/0/2 are the same
- C. If SWA is the master node, the functions of GigabitEthernet 1/0/1 and GigabitEthem 1/0/ 1/0/2 are the same
- D. If SWA is the master node, when the R&PP ring is in a healthy state, the SWA secondary port only allows VLAN4092 to pass
Answer: B,D
NEW QUESTION 48
Regarding the MSTP BPDU format, the correct statement is
- A. The length of the root ID field of the MST region is 48 bytes, the upper two bytes are the bridge priority level, the value range is 0-61440, the step length is 4096
- B. The same link can have different port path costs in different MSTIs
- C. The MSTI regional root ID is the ID of the bridge with the highest priority in MSTI
- D. The definition of the Flags field in the MSTI configuration message is exactly the same as the definition of the Flags field in the RST BPDU
Answer: B,C
NEW QUESTION 49
The customer's LAN switch SWA dual uplink connects the switch SWB and the switch SWC, and the link reliability is ensured through SmartLink. If the MAC address of the switch SWA device is 000f-e269-42d1 and the MAC address of the switch SWB device is 000f-e269-42d2, the switch The MAC address of the SWC device is 000f-e269-42d3 from the above information.
- A. When the switch SWA is connected to the switch SWB line failure, the purpose of the switch SWA to send the Flush message mac is 000f-e269-42d2
- B. When the switch SWA is connected to the switch SWB line failure, the purpose of the Flush packet sent by the switch SWA mac is 000f-e269-42d1
- C. None of the above answers are correct
- D. When the switch SWA is connected to the switch SWB line failure, the purpose of the Flush packet sent by the switch SWA mac is 000f-e269-42d3
Answer: C
NEW QUESTION 50
The two routers are connected together through the 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
shutdown
[RTB-GigabitEthernet1/0]display this
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
It can be known from the above information
- A. Router RTA is in VRRPMaster state, router RTB is in VRRP Backup state
- B. Router RTA is in VRRP Master state, router RTB is in VRRP Master state
- C. Router RTA is in VRRP Initialize state, router RTB is in VRRP Master state
- D. Router RTA is in VRRPBackup state, router RTB is in VRRP Master state
Answer: C
NEW QUESTION 51
Regarding the basic concepts of MSTP, the correct statement is
- A. CIST is a tree calculated by all switches in the network, and its root is the total root in the network
- B. The regional root of CIST is the root bridge of IST in a certain region
- C. The common root of CIST is the switch with the smallest bridge ID among all switches in the network
- D. The domain root of CIST refers to the switch with the highest priority in a certain domain
Answer: A,B,C
NEW QUESTION 52
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
Ethernetl/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. Data frames with VLAN20 tags can be forwarded from port Ethernet1/0/1
- B. Data frames with VLAN1 tags will be stripped of tags when they leave port Ethernet1/0/1
- C. Port Ethernet1/0/1 is a Trunk port, allowing all VLAN data to pass through
- D. Data frames with VLAN10 tags will not be discarded when entering port Ethernet1/0/1
Answer: C,D
NEW QUESTION 53
In the switching network as shown in the figure, all three switches have only default VLAN1. The interconnection ports of the three switches are Trunks, and all VLANs are allowed to pass. All three switches have the global and port GVRP functions enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet1/0/1 port is set to Forbidden on the switch SWA. Check the status of each Trunk port on the three switches. (Choose one or more)
- A. [SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- B. [SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- C. [SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- D. [SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
Answer: B,D
NEW QUESTION 54
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 VLA of VLAN20. After setting the IP address of each device as shown in the figure, you can judge
- A. PCC can communicate with SWA
- B. PCC can communicate with PCA
- C. PCC can communicate with SWB
- D. PCC can communicate with PCB
Answer: A,B,D
NEW QUESTION 55
Regarding the description of Isolate-user-vlan technology and Super VLAN technology, the following is correct
- A. SuperVLAN is a three-layer VLAN technology, so all switches that support Super VLAN technology are three-layer switches
- B. Isolate-user-vlan is a Layer 2 VLAN technology, so switches that support isolate-user-vlan technology are Layer 2 switches
- C. SuperVLAN technology is also called VLAN aggregation: the main purpose is to solve the waste of IP addresses or insufficient number of VLAN interfaces
Answer: A,C
NEW QUESTION 56
What is correct about IGMP Snooping?
- A. Port quick leave means that when the switch leaves the IGMP Leave message, it directly deletes the port from the outgoing port list of the corresponding forwarding entry
- B. The unknown multicast group dropping function can be enabled on the switch. When the switch receives unknown multicast data packets, it will only forward to its router port and not broadcast in the VLAN.
- C. Using the iIGMP Snooping function on the Layer 2 device can establish and maintain multicast forwarding entries at the data link layer, so that multicast data can be forwarded normally at the data link layer
- D. Both IGMP & IGMP Snooping can be configured in the same VLAN
Answer: A,B
NEW QUESTION 57
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. NeedToKnow features
- C. ntk temporary feature
- D. Trap features
Answer: A
NEW QUESTION 58
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. All devices are required to support standard topology discovery protocol
- B. The network equipment is provided by at least three different manufacturers
- C. The routing protocol must choose a standard dynamic routing protocol
- D. Each manufacturer's network equipment must use its own network management system for management
Answer: B,D
NEW QUESTION 59
After executing the display interface Ethernet 1/0/1 command on the switch SWA, the output information is as follows
It can be judged from the above output that _____.
- A. Data frames with VLAN10 tags are discarded when they enter the port Ethernet 1/0/1
- B. Data frames with VLAN10 tags will be stripped of tags when they leave the port Ethernet 1/0/1
- C. Data frames with VLAN10 tags will be stripped of tags when they leave the port Ethernet 1/0/1
- D. Data frames tagged with VLAN1 will be discarded when they enter the port Ethernet 1/0/1
Answer: C
NEW QUESTION 60
In the switching network as shown in the figure, VLAN 10 is set as Super VLAN on the switch SWA, VLAN 2 and VLAN 3 are Sub VLANs of VLAN 10, Port Ethernet1/0/3 is a Trunk port, PVID is VLAN 1, allowing all VLANs to pass ; Create VLAN2~VLAN20 on the switch SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to pass, after setting the IP address of each device as shown in the figure, the following statement is correct
- A. The PCC message comes out of the Ethernet1/0/4 port of SWB and enters the Ethernet1/0/3 port of SWA, and the VLAN tag carried is VLAN2
- B. The PCC message comes out of the SWB's Ethernet1/0/4 port, and after entering the SWA's Ethernet1/0/3 port, the VLAN tag carried is VLAN 10
- C. The PCC packet comes out of the Ethernet1/0/4 port of SWB and enters the Ethernet1/0/3 port of SWA. The VLAN tag carried is VLAN 1
- D. The PCC message comes out of the SWB's Ethernet1/0/4 port and enters the SWA's Ethernet1/0/3 port, and the VLAN tag carried is VLAN3
Answer: A
NEW QUESTION 61
XYZ company requires to build its network based on a modular enterprise network architecture. XYZ has a research and development base in Shenzhen and Xi'an, an office building in Beijing and Shanghai, offices with more than 50 people in 23 capital cities, and technicians in 23 provinces on business trips. Due to environmental and cost issues, some offices cannot access the headquarters through dedicated lines or packet-switched wide area network connections. According to these circumstances, the network module that XYZ company should have is _____.
- A. VPN access
- B. Remote|Distributed Office Network
- C. Large branch network
- D. Dedicated line, packet switching access
Answer: B
NEW QUESTION 62
By viewing PIM routing table entries, you can learn about the following:
- A. Upstream neighbor of (S, G) or (*:G) entry
- B. (S, G) or (*, G) downstream interface of the entry
- C. (S, G) or (*: G) table entry aging time
- D. (S, G) or (*, G) entry interface
Answer: A,B,C,D
NEW QUESTION 63
In the network as shown in the figure, after completing the corresponding configuration on the switch SWA, when the switch SWA receives the data frame from the PCA to access the PCB, it will judge whether to check the MAC address table or the routing table according to it.
- A. Destination MAC address of the data frame
- B. VLAN attributes of data frames
- C. Source MAC address of the data frame
- D. Source MAC address of the data frame
- E. The source IP address of the data frame
Answer: A
NEW QUESTION 64
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