4A0-100 Online Practice Questions and Answers

What is the meaning of carrier sense in the CSMA/CD algorithm?

A. The host will retransmit the frame if it detects a collision during transmission.

B. The host is able to detect the transmission speed of the Ethernet switch port to which the host is connected.

C. The host will only transmit data when it detects that no other devices are transmitting.

D. The host will only transmit upon a timer expiry.

E. The host will only transmit when it receives the token.

Network address: 200.12.30.0 Network mask: 255.255.255.0

Use the information above. You need to create 12 subnetworks supporting 10 host addresses each. Which extended prefix will meet this requirement?

A. /12

B. /24

C. /26

D. /28

E. /30

A network administrator is creating a subnet plan for the address 172.16.0.0/16. The network must support 459 hosts on each subnet while providing the maximum number of subnets. What subnet mask should be used?

A. 255.255.0.0

B. 255.255.128.0

C. 255.255.224.0

D. 255.255.254.0

Which of the following is a characteristic of a subnet created with a /31 prefix?

A. There is no broadcast address on the network.

B. The address can only be used as a loopback address.

C. This specifies a single host address.

D. A /31 prefix is not supported on the SR and ESS platform.

Which statement best describes an SDP?

A. Service Delivery Points are defined on the service provider network side and used to bind the service to an MPLS transport tunnel. Many services can be bound to a single SDP.

B. Service Delivery Points are defined on the service provider access side and used to bind the connection of the service to CE device. Many services can be bound to a single SDP.

C. Service Delivery Points are defined on the service provider network side and used to bind the service to an MPLS transport tunnel. Only one service can be bound to a single SDP.

D. Service Delivery Points are defined on the service provider access side and used to bind the service to CE device. Only one service can be bound to a single SDP.

Based on the network diagram (click the Exhibit Button).

R2 wants to connect a host on 192.168.2.0/24 behind CR1. What is the correct next-hop to use, assuming R1 is configured correctly?

A. 10.2.3.2

B. 10.1.1.1

C. 10.2.3.1

D. 10.1.1.2

Which of the following information can be seen within the FILE context of the SR 7x50? (Choose 2)

A. File sizes

B. Port statistics

C. Log-id 100 files

D. TiMOS image files

What type of VPN service does a VPWS provide?

A. Layer 3 direct internet access service

B. Layer 3 IP routed service

C. Layer 2 point-to-point service

D. Layer 2 multipoint service

Which of the following Nokia 7750 SR components is NOT part of the data plane?

A. The Media Dependent Adapter (MDA)

B. The Input/ Output Module (IOM)

C. The eXpandable Media Adapter (XMA)

D. The Control Processor Module (CPM)

Which of the following statements about route summarization is FALSE?

A. It reduces the number of routes advertised by the router.

B. It allows a single route table entry to represent multiple subnetworks

C. It can reduce the size of the routing table in neighboring routers.

D. It advertises more specific routes for routing advertisement stability.