[2022年01月29日] 合格させるH31-124_v2.0レビューガイド、信頼され続けるH31-124_v2.0テストエンジン
H31-124_v2.0テストエンジン練習テスト問題、試験問題集
質問 19
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
正解: A
質問 20
When configuring Diff-Serv in QoS, the edge router on Diff-Serv network classify packets according to its source address, destination address or other parameters, assigning different IP precedence for different packets, while other routers classify packets according to IP precedence.
- A. True
- B. False
正解: A
質問 21
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. Static routing
- B. Tunnel policy
- C. Automatic routing
- D. Policy-based routing
正解: D
質問 22
Which of the following statements about traffic policy In CBQ configuration ate correct?
- A. Traffic policy is used to bind traffic classifier with traffic behavior.
- B. The traffic policy applied to some interface can not be deleted.
- C. Traffic policy can be nested infinitely.
- D. Traffic policy nesting means one QoS policy contains another QoS policy, the behavior of the parent policy Is a sub-policy.
正解: D
質問 23
Which of the following statements are correct?
- A. After VPN FRR is deployed, the end-to-end service convergence time is shorter than 1 second.
- B. VPN FRR implements quick traffic switchovers if a PE becomes faulty.
- C. Both TE FRR and VPN FRR are used to protect tunnels, and therefore they can replace each other.
- D. TE FRR Implements quick traffic switchovers if a PE becomes faulty.
正解: A,B
質問 24
Which of the following statements is correct regarding virtual router?
- A. If multiple routers are configured with the same virtual IP address, they all associate to the same virtual router.
- B. If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and at feast one virtual IP address.
- C. If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and virtual IP address.
- D. If multiple routers are configured with the same virtual router ID.they all associate to the same virtual router.
正解: C
質問 25
Which of the statements about BGP UPDATE message are correct?
- A. One UPDATE message can advertise multiple routes at one time, and the path attributes can be different.
- B. BGP uses Update message to implement routing information updating.
- C. One UPDATE message can advertise multiple routes at one time, but the path attributes must be the same.
- D. One UPDATE message can include multiple unreachable routes.
正解: B,C,D
質問 26
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
正解: A
質問 27
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
正解: A
質問 28
Which of the following statements about LAN switch is correct?
- A. LAN switch can modify the data field of the forwarded frame when necessary.
- B. LAN switch can still operate normally even when loop exists.
- C. LAN switch can detect loop according to the contents of the packet.
- D. LAN switch is transparent for user, it does not modify the data field of the forwarded frame.
正解: D
質問 29
Which of the following statements regarding the description of LDP is incorrect?
- A. Between two LSRs that run LDP, the LDP session is established and Label/FEC mapping information is exchanged.
- B. The two routers between which LDP session is established are called LDP Peer.
- C. The UDP and TCP port number for LDP is 64.
- D. In MPLS, LDP is used to implement label distribution, label control and label retention.
正解: C
質問 30
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. 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.
- C. IGMP snooping has been enabled on the switch.
- D. The device connected to GE 3/0/1 Is a multicast router.
正解: B
質問 31
Which of the following are the features of Huawei IPRAN solution?
- A. One network, one set of O&M, full service bearing, lowest network construction cost and O&M cost; Visualized O&M, Reducing O&M Costs and Simple and Efficient.
- B. Based on a unified router platform and a unified VRP platform, IP RAN is compatible with PTN products.
- C. Supports Layer 3 networking and smooth evolution to LTE, protecting customers' investment.
- D. Oriented to FMC and Adapted to Future Development Requirements.
正解: A
質問 32
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. False
- B. True
正解: A
質問 33
Compared with VPLS, what are the characteristics of EVPN?
- A. 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.
- B. 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.
- C. 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.
- D. 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.
正解: C
質問 34
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. 4s
- C. 9s
- D. 2s
正解: D
質問 35
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. The last three bits of DSCP are set to 101.
- D. All 8 bits of TOS are set to zero.
正解: B
質問 36
Which of the following operations need to be complete before IP FRR configuration?
- A. Configure different costs to generate two routes with different costs.
- B. Configure a dynamic routing protocol on the entire network to Implement IP connectivity between nodes.
- C. Configure the same cost to generate two equal-cost routes.
- D. Configure static routes or an IGP to implement IP connectivity between nodes.
正解: B
質問 37
Which of the following statement are correct regarding TTL value in VRRP packet?
- A. By default, the VRRP packet with TTL value not equal to 255 will be dropped; On VRP, we can use some commands to disable the function of delecting TTL value.
- B. The VRRP packet is only forwarded in one IP network, so the TTL value is always set to 1.
- C. The TTL value of device from different manufactures is different; on VRP, the TTL value is 1.
- D. The TTL value must be 255 In normal VRRP packet.
正解: C
質問 38
Which of the following statements about traffic policy In CBQ configuration are correct?
- A. The traffic policy applied to some interface can not be deleted.
- B. Traffic policy can be nested infinitely.
- C. Traffic policy is used to bind traffic classifier with traffic behavior.
- D. Traffic policy nesting means one QoS policy contains another QoS policy, the behavior of the parent policy Is a sub-policy.
正解: A,C,D
質問 39
How does MPLS BGP VPN handle the problem of address overlapping of different VPN sites?
- A. To allocate unique RD for each VPN.
- B. To use different routing protocols In the backbone network for afferent VPN.
- C. To allocate unique RT for each VPN.
- D. To maintain separate VRF lor different VPN.
- E. To allocate different LSP for each VPN.
正解: B
質問 40
Which of the BGP attributes is Optional transitive attribute?
- A. LOCAL_PREF
- B. ORIGIN
- C. AS_PATH
- D. NEXT_HOP
- E. MED
- F. COMMUNITY
正解: F
質問 41
Which of the following statements regarding IP address 224.0.0.1 are correct?
- A. It represents all the routers.
- B. It is a private IP address.
- C. It is a multicast IP address.
- D. It represents all the hosts and routers.
正解: D
質問 42
Which of the following access modes can be used by leaf nodes in a data center?
- A. Single-node system deployment
- B. ToR Deploying an SVF System
- C. Deploying the M-Lag on the ToR
- D. ToR Stack Deployment
正解: C
質問 43
An internal FTP server wants to provide the ftp service to the internet, which of the following NAT methods can be used?
- A. NAT Server
- B. No-PAT
- C. Destination NAT
- D. NAT Inbound
正解: A
質問 44
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