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NEW QUESTION 13
Which of the following statements about layer 2 LAN switch are incorrect?
- A. LAN switch will modify the network layer header of the packet and then forward it.
- B. LAN switch can learn Mac address automatically.
- C. LAN switch will modify the data link layer header of the packet and then forward it.
- D. LAN switch operates at data link layer.
Answer: A
NEW QUESTION 14
Which of the following multicast IP addresses is administratively scope address?
- A. 224.0.0.0-224.0.0.255
- B. 224.0.1.0-238.255.255.255
- C. 239.0.0.0-239.0.0.255
- D. 224.0.0.0-239.255.255.255
Answer: D
NEW QUESTION 15
Which of the following operations need to be complete before IP FRR configuration?
- A. Configure static routes or an IGP to implement IP connectivity between nodes.
- B. Configure the same cost to generate two equal-cost routes.
- C. Configure a dynamic routing protocol on the entire network to Implement IP connectivity between nodes.
- D. Configure different costs to generate two routes with different costs.
Answer: C
NEW QUESTION 16
Which of the following statements are correct?
- A. Both TE FRR and VPN FRR are used to protect tunnels, and therefore they can replace each other.
- B. After VPN FRR is deployed, the end-to-end service convergence time is shorter than 1 second.
- C. VPN FRR implements quick traffic switchovers if a PE becomes faulty.
- D. TE FRR Implements quick traffic switchovers if a PE becomes faulty.
Answer: B
NEW QUESTION 17
Which of the following access modes can be used by leaf nodes in a data center?
- A. ToR Deploying an SVF System
- B. Single-node system deployment
- C. ToR Stack Deployment
- D. Deploying the M-Lag on the ToR
Answer: A,C,D
NEW QUESTION 18
Which of the following statements regarding multicast MAC address is correct?
- A. On Ethernet, 28-bits of layer 3 multicast IP address are mapped into the 24-bits of the layer 2 multicast MAC address.
- B. Multicast MAC address is composed of 23 bits.
- C. The range of multicast MAC address is assigned by IEEE.
- D. The first six hexadecimal value of the multicast Mac address is 0x01005e.
Answer: D
NEW QUESTION 19
Interface-based ACLs define rules based on inbound interfaces of packets to filter packets. Run the
"traffic-filter command to invoke the ACL.
- A. True
- B. False
Answer: B
NEW QUESTION 20
Which of the following statements disobey the basic principle of area division?
- A. If the ISP runs OSPF protocol in the whole province network, then one city can be taken as one area.
- B. In the network, there are some sub networks such as 110.1.1.0/24,110.1.2.0/24,110.1.3.0/24, 120.1.1.0/24,120.1.2.0/24 ,120.1.3.0/24.Then all the routers belonging to 110 network can be configured in one area.
- C. One network maybe includes high-end, mid-end and low-end routers. Generally, all of these routers will be in same area.
- D. Make all routers with larger routing-table into one area.
Answer: A,B,D
NEW QUESTION 21
The VRRP advertfse-lnterval is 2s, preempt mode is enabled, Delay Time is 3s, then which of the following is the Master_Down_Interval time?
- A. 6s
- B. 2s
- C. 4s
- D. 9s
Answer: D
NEW QUESTION 22
Which of the following statements about LAN switch is correct?
- A. LAN switch is transparent for user, it does not modify the data field of the forwarded frame.
- B. LAN switch can detect loop according to the contents of the packet.
- C. LAN switch can still operate normally even when loop exists.
- D. LAN switch can modify the data field of the forwarded frame when necessary.
Answer: D
NEW QUESTION 23
The IGMP snooping configuration is as follows:
#
vlan batch 3
#
igmp-snooping enable
#
vlan 3
igmp-snooping enable
#
interface GigabitEthernet1/0/1
port hybrid tagged vlan 3
I2-multicast static-group group-address 225.1.1.1 to 225.1.1.3 vlan 3
#
interface GigabitEthernet3/0/1
port hybrid tagged vlan 3
igmp-snooplng static-router-port vlan 3
Which of the following statements are correct?
- A. The device connected to GE 1/0/1 can receive multicast traffic only for the multicast groups 225.1.1.1 to
225.1.1.3. because static multicast groups are configured on GE 1/0/1. - B. IGMP snooping has been enabled on the switch.
- C. The device connected to GE 1/0/1 can send Report messages to receive multicast data 'or multicast groups outside the 225.1.1.1 to 225.1-1.3 range.
- D. The device connected to GE 3/0/1 Is a multicast router.
Answer: B,C,D
NEW QUESTION 24
Which of the following is not a feature of Segment Routing?
- A. In addition, the centralized control mode of the controller and the distribution control mode of the forwarder are supported, and the balance between centralized control and distributed control is provided.
- B. By extending existing protocols (such as IGP), the existing network can be smoothly evolved.
- C. Uses the source routing technology to provide fast interaction between the network and upper-layer applications.
- D. Segment Routing is a connection-oriented technology that maintains the connection status.
Answer: D
NEW QUESTION 25
VXLAN uses MAC in UDP encapsulation to extend Layer 2 networks and encapsulates Ethernet packets on IP packets. When packets are transmitted on a routed network, the intermediate touting device does not need to learn inner MAC addresses.
- A. True
- B. False
Answer: A
NEW QUESTION 26
Which of the following are two important working stages in PPPoE protocol?
- A. Discovery Stage
- B. LCP
- C. NCP
- D. Session Stage
Answer: A,D
NEW QUESTION 27
Which of the following MPLS TE components is used to set up tunnel?
- A. Path calculation
- B. Signaling
- C. Information distribution
- D. Packet forwarding
Answer: B
NEW QUESTION 28
Which of the following statements disobey the basic principle of area division?
- A. If the ISP runs OSPF protocol in the whole province network, then one city can be taken as one area.
- B. One network maybe includes high-end, mid-end and low-end routers. Generally, all of these routers will be in same area.
- C. Make all routers with larger routing-table into one area.
- D. In the network, there are some sub networks such as 110.1.1.0/24,110.1.2.0/24,110.1.3.0/24,
120.1.1.0/24,120.1.2.0/24 ,120.1.3.0/24.Then all the routers belonging to 110 network can be configured in one area.
Answer: A,C,D
NEW QUESTION 29
Which of the following functions could be achieved by the LCP of PPP?
- A. IP address negotiation
- B. To establish, maintain and terminate the point-to-point connection
- C. To maintain multiple physical links
- D. IPX address negotiation
Answer: B
NEW QUESTION 30
Interface-based ACLs define rules based on inbound interfaces of packets to filter packets. Run the "traffic-filter command to invoke the ACL.
- A. True
- B. False
Answer: A
NEW QUESTION 31
There are two MAC address learning modes in the VPLS: unqualified and qualified. In qualified mode, all VLANs are processed by the same VSI and they share the same broadcast domain or MAC address space.
- A. True
- B. False
Answer: A
NEW QUESTION 32
After the SR LSP or SR-TE tunnel is established, which of the following methods can be used to import service traffic to the SR LSP or SR-TE tunnel?
- A. Policy-based routing
- B. Static routing
- C. Tunnel policy
- D. Automatic routing
Answer: A,B,C,D
NEW QUESTION 33
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