4A0-100 Online Practice Questions and Answers

Which organization eventually became the standards body for IP and related protocols?

A. IEEE

B. IETF

C. NSFNET

D. ITU-T

E. APNIC

Which of the following is not supported on the Nokia 7450 ESS?

A. Support for IPv6.

B. Support for POS.

C. Upgrade path to the Nokia 7750 SR.

D. Support for IS-IS

Which Ethernet frame field does the receiver use to verify the integrity of the received bits?

A. Destination address

B. Frame check sequence

C. Preamble

D. Length field

Which of the following is true of Ethernet half-duplex transmission?

A. Half-duplex transmission is less efficient because the frame MTU is smaller.

B. Half-duplex transmission is only 30-40% efficient because of collisions.

C. Ethernet switches support half-duplex transmission only.

D. All of the above.

Based on the network diagram (click on the exhibit), what is the command to use on R1 to setup a static route to the network on CR1

A. config router static-route 192.168.2.0/24 next-hop 10.2.3.2

B. config router static-route 10.2.3.1 next-hop 192.168.2.0

C. config router static-route 192.168.2.0/24 next-hop 10.2.3.1

D. config router static-route 10.2.3.2 next-hop 192.168.2.0

Which of the following statements best characterize Distance Vector Routing? (Choose 2)

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

B. Routers flood link information throughout the entire area.

C. Network converges quickly (within several seconds) after a topology change.

D. Routers do not have precise knowledge of the entire network topology.

Which of the following SAP types can be associated to a VPWS? (Choose 3)

A. Ethernet

B. ATM

C. Token Ring

D. Frame Relay

Which TCP/IP layer is responsible for providing the user's interface to the network?

A. the application services layer

B. The transport layer

C. The Internet protocol layer

D. The network interface layer

Router R3 receives an LSA with the sequence number 111 from router R4 and then receives another copy of the LSA with a sequence number 112 from router R2. What does router R3 do with the LSA from R2?

A. R3 discards the LSA received from R2 and sends a copy of the LSA from its link state base to R2.

B. R3 installs the LSA received from R2 in its link state database and floods a copy to its neighbors.

C. R3 discards the LSA received from R2 and sends an ACK to R2.

D. R3 installs the LSA received from R2 in its link state database, sends an ACK to R2, and floods a copy to its neighbors.

Which of the following is NOT a characteristic of a Virtual Private Network (VPN)?

A. Each customer's traffic is isolated from other customers.

B. Service providers utilize a shared infrastructure to support multiple VPNs.

C. Customer data is altered as it traverses a VPN.

D. A VPN is created specifically to meet the requirements of each customer.