A.FCoE

B.MSTP

C.TRILL

D.NFV

E.VxLAN

A.The destination network described by this LSA is 10.0.23.0/24

B.The LSA in Figure is generated by Xinyi

C.The type of the LSA is AS-tenaL-L84

D.This device is AER

A.The external environment where hardware runs does not need special attention.

B.For device environment maintenance, maintenance personnel need to go to the site or even use some professional tools for observation and measurement.

C.For device software maintenance, onsite operations are allowed but only remote operations are recommended.

D.The device software running is closely related to services running on the device.

A.Check whether all non-backbone areas are correctly and reliably connected to the backbone area.

B.Determine that the backbone area will not split.

C.Check whether secondary optimal routes exist on the network according to OSPF route selection rules.

D.Check the OSPF network topology and ensure that no loop exists when OSPF routes are being calculated.

E.Verify that OSPF costs can correctly demonstrate the actual bandwidth of links at more than 100 Mbit/s.

A.Before performing a major upgrade or complex upgrade operations, you need to conduct commissioning and test the upgrade plan and contingency plan in the simulation environment.

B.To ensure the stable running of network devices, you are advised to upgrade the device software in a timely manner.

C.The upgrade only causes service interruption for a very short time. Therefore, you do not need to confirm with the customer about the upgrade, improving efficiency.

D.Generally, the device software upgrade does not affect the stable network running. Therefore, risk assessment and avoidance are not required before the upgrade.