A local key pair must be configured for a device working as an SSH server.

• A. TRUE
• B. FALSE

Which of the following statements regarding OSPF neighbor relationship faults is false?

• A. The ExStart state indicates that two neighbor routers have inconsistent MTUs or the same OSPF Router ID (RID),
• B. For non-DR and non-BDR routers on an Ethernet link, the 2-Way state is acceptable.
• C. The Attempt state indicates that the router does not send unicast Hello packets to configured neighbors.
• D. The Init state indicates that the router has received Hello packets from its neighbors but the received Hello packets do not contain the OSPF RID of the receiving router.

Assume that you received a phone call at your office seat. An employee said he/she could not access the Internet on the PC and needed your technical support. Then you ran the ping command on his/her PC and ran the tracert command to check where packet loss occurred.
Which of the following troubleshooting methods is used in this process?

• A. Configuration comparison
• B. Top-down
• C. Service traffic path check
• D. Bottom-up

Which of the following statements regarding the device environment check is true?

• A. For energy saving, the current temperature and humidity in the equipment room must meet requirements of devices. Air conditioners are not required to run continuously and stably.
• B. When the grounding mode and the grounding resistance are checked, the working ground, protection ground, and building lightning protection ground should be separately configured in the equipment room.
• C. It is recommended that power cables and service cables be placed together in a neat and orderly manner.
• D. Devices should be placed stably in fiat positions in a ventilated and dry environment, and only a few sundries can be placed around the devices.

Software upgrade operations are similar for Huawei datacom products, Therefore, before a software upgrade, you only need to briefly read the upgrade guide.

• A. TRUE
• B. FALSE