4A0-100 Sample Questions & Answers

Routers periodically send a copy of their table to their neighbors.

Routers send triggered updates to the entire network.

Routers know the entire network topology.

Routers use Shortest Path First algorithm to calculate the optimum paths.

At the edge of the provider's network facing the customer.

At the edge of the customer's network facing the provider.

h the core of the provider's network.

On the customer premises.

BGP

VPWS

VPRN

ISP

VPLS

An autonomous system is a network or group of networks operating under one administrative authority.

An autonomous system is another term for the collection of routers that make up the Internet

An autonomous system is a network or group of networks from many organizations running different IGP routing protocols, but all running BGP.

An autonomous system is a loosely defined term that can refer to any organization that has a connection to the Internet.

A PE router only connects to CE devices.

A PE router only connects to P routers.

A PE router connects to at least one P router.

APE router connects to at least one CE device.

PE routers support many different interface types connecting to CE devices.

pe routers only support Ethernet interfaces connecting to the CE.

1/1/1

1/1/2

1/1/3

1/1/4

They are deployed over point-to-point physical topologies to allow sub-50ms convergence.

An ADM (Add Drop Multiplexer) is used to connect various sites to the infrastructure.

c |p datagrams are encapsulated in a PPP frame for transmission over an SDH network,

D IP datagrams are encapsulated in an Ethernet frame for transmission over a SONET network.

Devices on different VLANs cannot communicate with each other.

Devices on different VLANs can communicate with each other as long as they are connected to the same switch.

Devices on different VLANs can communicate with each other as long as the switches they are attached to are connected to each other with an Ethernet connection.

Devices on different VLANs can communicate with each other if there is an IP router to connect the VLANs.

Configuration changes are stored in a candidate configuration datastore.

a router uses the running configuration datastore for its operation.

Configuration changes are activated by committing the candidate configuration.

a running configuration datastore consists of multiple candidate configuration datastores.

100 m.

500 m.

1 Km.

10 Km.