Question

On which interfaces is the OSPF broadcast network type enabled by default? (2)

a) Frame Relay
b) HDLC
c) FDDI
d) Ethernet

Answer 1

The OSPF broadcast network type is enabled by default on interfaces that support broadcast and multicast traffic. The correct answers for the default OSPF broadcast network type are (c) FDDI and (d) Ethernet.

Step-by-step explanation:

The OSPF broadcast network type is enabled by default on certain types of network interfaces that can support broadcast and multicast traffic. These interfaces must be capable of sending a single message to multiple destinations (broadcast) and of using specific multicast addresses for OSPF routing protocol traffic.

In the context of the specified options, the OSPF broadcast network type is enabled by default on:

• Ethernet - This is a common LAN technology that inherently supports broadcast and multicast, making it suitable for OSPF's requirements.
• FDDI (Fiber Distributed Data Interface) - FDDI is a standard for data transmission on fiber optic lines in a local area network that also supports broadcast and multicast.

Therefore, the correct answers are (c) FDDI and (d) Ethernet.