A fully updated 2021 H12-222 Exam Dumps exam guide from training expert ITExamSimulator
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NEW QUESTION 185
Which statement regarding the following configuration is false?
- A. Configure GigabitEthernet 0/0/1 as a trusted interface.
- B. Enable DHCP snooping to defend against bogus ARP spoofing attacks.
- C. Enable DHCP snooping to defend against bogus DHCP server attacks.
- D. If the DHCP request packet received by GigabitEthernet 0/0/1 does not contain the SubOptionl information of Option 82, the device generates Option 82 and inserts it into the packet.
Answer: D
NEW QUESTION 186
Which of the following methods is used to control internal employees and guests access networks in the Agile Controller wireless access control scenario?
- A. Access control by SSID (different SSIDs for internal employees and guests)
- B. Access control by user name
- C. According to whether the wireless terminal MAC address registration control access
- D. Access control by wireless terminal type
Answer: A
NEW QUESTION 187
What are the advantages of NFV? (Multiple Choice)
- A. Reduce device and energy cost.
- B. Uses the unified software versions for devices and uniformly manage access tenants.
- C. Shorten the network service innovation period.
- D. Provide services for different applications and tenants through the single platform.
Answer: A,C,D
NEW QUESTION 188
LR can be used on a physical interface to limit the total rate of sent packets including packets of burst traffic.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 189
eSight single-server mode allows login of only one user. If another user logs in, the system displays a message indicating that a user is online currently.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 190
On the network shown in the following figure, a remote LDP session needs to be established between SWA and SWC.
Which of the following statements is true?
- A. You need to create a remote peer and specify an LSR ID for the remote peer.
- B. You need to configure the directly-connected interfaces between SWA and SWC to set up TCP connections.
- C. You need to specify the LSR ID of the remote peer in the system view.
- D. The existing configuration is correct.
Answer: A
NEW QUESTION 191
DHCP uses different types of packets to implement different functions.
Which of the following is the function of the DHCP Offer packet?
- A. The DHCP server sends a DHCP Offer packet to the client, carrying configuration parameters, such as the IP address.
- B. The DHCP server sends DHCP Offer packets to respond to the DHCP Discover packets sent by the DHCP client, providing requested configuration parameters.
- C. The DHCP client sends a DHCP Offer packet to the DHCP server to request configuration parameters, configuration acknowledgement, or extension of the IP address lease.
- D. The DHCP Offer packets are broadcast by the DHCP client to detect available servers.
Answer: B
NEW QUESTION 192
Which queue technology is used to implement the Best-Effort Service model?
- A. LQ
- B. PQ
- C. FIFO
- D. WFQ
Answer: C
NEW QUESTION 193
The jitter occurs because the E2E delays of data packets in the same flow are different.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 194
If the DHCP client IP address is not extended after 87.5% of the lease is reached, which packet is used by the client to extend the IP address lease?
- A. DHCP Release unicast packet
- B. DHCP Discover broadcast packet
- C. DHCP Request broadcast packet
- D. DHCP Request unicast packet
Answer: C
NEW QUESTION 195
Which of the following statements regarding the ingress node in MPLS forwarding process are correct?
(Multiple Choice)
- A. The label operation type is Push.
- B. The ingress node finds the NHLFE entry matching the tunnel ID in the ILM table to associate LFIB and NHLFE entries.
- C. The ingress node checks the NHLFE entry to obtain the outbound interface, next hop, outgoing label, and label operation type.
- D. The ingress node adds the obtained label to the IP packet, processes EXP by QoS policy, processes the TTL, and forwards the encapsulated MPLS packet to the next hop.
- E. After receiving a data packet, the ingress node searches for tunnel ID in the ILM table first.
Answer: A,C
NEW QUESTION 196
Which of the following statements regarding Network Address and Port Translation (NAPT) and No Port Translation (No-PAT) is true?
- A. In NAPT mode, only the network layer protocol address can be converted.
- B. After NAPT translation, all packets are from the same IP address for external users.
- C. In No-PAT mode, the network layer protocol address can be converted.
- D. In No-PAT mode, only the transport layer protocol port number can be converted.
Answer: C
NEW QUESTION 197
A 32-bit MPLS header consists of a 20-bit label used for packet forwarding; A 3-bit EXP field that identifies the IP packet priority; A 1-bit bottom-of-stack flag that identifies the last label; And an 8-bitTTL field. Which statement regarding the TTL field is true?
- A. This field used to control the upstream device in label distribution.
- B. This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.
- C. This field is used for label management.
- D. This field limitation the LSR.
Answer: B
NEW QUESTION 198
Which QoS indicator are affected by network congestion? (Multiple Choice)
- A. Transmission distance
- B. Transmission delay
- C. Transmission bandwidth
- D. Transmission jitter
Answer: B,C,D
NEW QUESTION 199
Assume that the bandwidths of flows a, b, c, and d are all 100 Mbit/s. The total interface bandwidth is 200 Mbit/s. When network congestion occurs, congestion management is required.
If flows a, b, c, and d belong to WFQ queues and the weight ratio is 1:2:3:4, what are traffic volumes of the four flows?
- A. The bandwidths of flows a, b, c, and d are 20 Mbit/s, 40 Mbit/s, 60 Mbit/s, and 80 Mbit/s.
- B. All traffic is discarded due to congestion.
- C. The bandwidths of flows a, b, c, and d are 100 Mbit/s, 100 Mbit/s, 0 Mbit/s, and 0 Mbit/s.
- D. The bandwidths of flows a, b, c, and d are 80 Mbit/s, 60 Mbit/s, 40 Mbit/s, and 20 Mbit/s.
Answer: A
NEW QUESTION 200
There are multiple types of LDP messages. Which functions can be implemented by LDP session messages?
(Multiple Choice)
- A. Negotiate parameters for setting up an LDP session.
- B. Terminate incomplete label request messages.
- C. Monitor the TCP connection integrity of LDP sessions.
- D. Release labels.
Answer: A,C
NEW QUESTION 201
Which following module is not the functional module of NFV framework?
- A. VNFM
- B. OSS
- C. VIM
- D. VNF
Answer: B
NEW QUESTION 202
FIFO can allocates different weights to different services and has good control of delay and jitter.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 203
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