What is a characteristic of data modeling language?

Which two routing protocols support Cisco MPLS TE Tunnels? (Choose two.)

Refer to the exhibit. A large service provider is migrating device management from Layer 2 VLAN-based to Layer 3 IP-based solution. An engineer must configure the ISIS solution with these requirements:
- Network management server IP 172.16.10.1 must be advertised from the
core MPLS network to the regional domain.
- The external network 202.10.0.0/24 must not establish ISIS peering
with the R5 router.
- The regional network must prevent sending unnecessary hello packets
and flooding the routing tables of the R5 router.
Which two ISIS parameters must be implemented to meet these requirements? (Choose two.)

Which CLI mode must be used to configure the BGP keychain in Cisco IOS XR software?

Refer to the exhibit. A network engineer with an employee id: 3812:12:993 has started to configure router R1 for IS-IS as shown.
Which additional configuration must be applied to configure the IS-IS instance to advertise only network prefixes associated to passive interfaces?