Click the Exhibit button An operator is unable to establish any IS-IS adjacencies on a router
in the network. Based on the configuration shown in the exhibit, what is the problem?

A.
The ISO address for interface loO is not in hex format

B.
Interface loO must be configured in the IS-IS hierarchy

C.
Each network interface needs a unique family ISO address

D.
The IS-IS level for an each interface must be specified