352-011 Exam Dumps : Cisco Certified Design Expert Practical Exam

Bidirectional Forwarding Detection

automatic protection switching

UDLD

Ethernet OAM

It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST+ and MST.

It prevents switch loops by detecting on one-way communications on the physical port.

It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.

It makes the port go immediately into the forwarding state after being connected.

It prevents switched traffic from traversing suboptimal paths on the network.

It does not generate a spanning-tree topology change upon connecting and disconnecting a station on a port.

The default IS-IS network type is point-to-point so a DIS is not elected

A DIS is elected between the IS-IS neighbors and the elected DIS is pre-empted if router with a higher system ID is connected

The area, levels, and interface MTU parameters must match, and system MTU must be unique for two IS-IS routers to become adjacent

Faster IS-IS hello and dead timers increase bandwidth and CPU use, and may cause instability

The IS-IS hello and dead timers should be tuned to detect failures as quickly as possible

A DIS is elected between the IS-IS neighbors and the elected Dis is pre-empted if a router with a lower system ID is connected

The hello and dead timers must match for two IS-IS routers to become adjacent