Free H31-124_v2.0 Sample Questions and 100% Cover Real Exam Questions (Updated 60 Questions)
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NEW QUESTION 14
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 15
Compared with VPLS, what are the characteristics of EVPN?
- A. EVPN enables a device to implement load balancing among multiple EVPN routes with the same destination MAC address but different next hops when managing MAC addresses.
- B. EVPN needs to be configured to be in full connection state on all PEs on the carrier's backbone network.
That is, PWs must be set up between any two PEs. - C. The PE learns the local and remote MAC addresses and their IP addresses through ARP and MAC address advertisement routes, and caches the information locally to prevent ARP request packets from being broadcast to other PEs and reduce network resource consumption.
- D. By using the EVPN technology, PB on the carrier's backbone network do not need to establish full connections, which greatly reduces the network complexity and reduces the number of signaling messages.
Answer: A
NEW QUESTION 16
Which of the following cannot be used to classify IP packets?
- A. Outbound Interface
- B. Packet precedence
- C. VIAN Priority
- D. MAC
- E. Port number
- F. Protocol type
Answer: A
NEW QUESTION 17
Which of the following is not a feature of Segment Routing?
- A. Uses the source routing technology to provide fast interaction between the network and upper-layer applications.
- B. By extending existing protocols (such as IGP), the existing network can be smoothly evolved.
- C. Segment Routing is a connection-oriented technology that maintains the connection status.
- D. 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.
Answer: C
NEW QUESTION 18
Which of the following statements regarding multicast MAC address is correct?
- A. The range of multicast MAC address is assigned by IEEE.
- B. The first six hexadecimal value of the multicast Mac address is 0x01005e.
- C. Multicast MAC address is composed of 23 bits.
- D. On Ethernet, 28-bits of layer 3 multicast IP address are mapped into the 24-bits of the layer 2 multicast MAC address.
Answer: B
NEW QUESTION 19
The PPPoE Session Stage is a complete PPP procedure.
- A. True
- B. False
Answer: A
NEW QUESTION 20
Which of the following statements about CAR are correct?
- A. CAR can be used to limit the rate of the specific type of traffic.
- B. CAR and queue scheduling cannot be used at the same time because of confliction.
- C. CAR uses token bucket mechanism to measure traffic and allocate bandwidth.
- D. CAR can be used for incoming interface and outgoing interface.
Answer: A,C,D
NEW QUESTION 21
Which of the following statements about LAN switch is correct?
- A. LAN switch can detect loop according to the contents of the packet.
- B. LAN switch is transparent for user, it does not modify the data field of the forwarded frame.
- C. LAN switch can modify the data field of the forwarded frame when necessary.
- D. LAN switch can still operate normally even when loop exists.
Answer: B
NEW QUESTION 22
The Session ID of PPPoE could be changed during the whole Session Stage.
- A. True
- B. False
Answer: A
NEW QUESTION 23
Which of the following multicast IP addresses is administratively scope address?
- A. 239.0.0.0~239.255.255.255
- B. 224.0.0.0~224.0.0.255
- C. 224.0.1.0~238.255.255.255
- D. 239.0.0.0~239.0.0.255
Answer: A
NEW QUESTION 24
Which of the following statements about layer 2 LAN switch are incorrect?
- A. LAN switch operates at data link layer.
- B. LAN switch will modify the data link layer header of the packet and then forward it.
- C. LAN switch will modify the network layer header of the packet and then forward it.
- D. LAN switch can learn Mac address automatically.
Answer: B,C
NEW QUESTION 25
Assuming that a router which only supports IP Precedence receives a packet marked with DSCP, which of the following statements is correct?
- A. Eight levels of AF in DSCP are mapped into eight levels of IP Precedence.
- B. The first three bits of DSCP are mapped into three bits of IP Precedence.
- C. All 8 bits of TOS are set to zero.
- D. The last three bits of DSCP are set to 101.
Answer: A
NEW QUESTION 26
The Session ID of PPPoE could be changed during the whole Session Stage.
- A. True
- B. False
Answer: B
NEW QUESTION 27
Policy-based Routing can be used for traffic classification and marking when deploying QoS. Classification can be made based on ACL and packet length, marking can be made by modifying DSCP or IP Precedence field of packet.
- A. True
- B. False
Answer: A
NEW QUESTION 28
The Ethernet switch working in store and forward mode drops the frame with length smaller than 64 bytes.
- A. True
- B. False
Answer: A
NEW QUESTION 29
BGP Is an exterior gateway protocol which runs among ASs. It focuses on routes control and selection of optimal routes rather than discovery and calculation of routes.
- A. True
- B. False
Answer: A
NEW QUESTION 30
BGP Is an exterior gateway protocol which runs among ASs. It focuses on routes control and selection of optimal routes rather than discovery and calculation of routes.
- A. True
- B. False
Answer: B
NEW QUESTION 31
Which of the following type of MPLS L2 VPN carries only one label on an MPLS network?
- A. CCC
- B. Kompella
- C. Martini
- D. SVC
Answer: B
NEW QUESTION 32
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