Ensurepass

QUESTION 61

Which network topology is most closely associated with FDDI?

 

A.

bus

B.

token passing bus

C.

star

D.

extended star

E.

ring

 

Correct Answer: E

Explanation:

http://en.wikipedia.org/wiki/Fiber_Distributed_Data_Interface

 

 

QUESTION 62

Which layer of the OSI model is associated with Token Ring Media Access Control?

 

A.

datagram

B.

routing

C.

network

D.

data link

E.

transport

F.

transmission

G.

session

 

Correct Answer: D

Explanation:

“Token ring local area network (LAN) technology was a protocol which resided at the data link layer (DLL) of the OSI model.”

http://en.wikipedia.org/wiki/Token_ring

 

 

QUESTION 63

When deploying 10BASE-2 Ethernet, which type of connector is used?

 

A.

AUI

B.

UTP

C.

STP

D.

BNC

E.

RJ-11

F.

RJ-45

G.

ST

H.

DC

 

Correct Answer: D

Explanation:

“10BASE2 (also known as cheapernet, thin Ethernet, thinnet, and thinwire) is a variant of Ethernet that uses thin coaxial cable (RG-58A/U or similar, as opposed to the thicker RG-8 cable used in 10BASE5 networks), terminated with BNC connectors”

http://en.wikipedia.org/wiki/10BASE2

 

 

QUESTION 64

When deploying 10BASE-2 Ethernet, what is the maximum cable length?

 

A.

100 meters

B.

100 feet

C.

150 meters

D.

150 feet

E.

185 meters

F.

185 feet

 

Correct Answer: E

Explanation:

“10BASE2 coax cables have a maximum length of 185 meters (607 ft).”

http://en.wikipedia.org/wiki/10BASE2

 

 

QUESTION 65

How many IP address ranges are specified in RFC 1918?

 

A.

1 in Class A, 2 in Class B, and 4 in Class C

B.

2 in Class A, 4 in Class B, and 8 in Class C

C
.

4 in Class A, 8 in Class B, and 16 in Class C

D.

1 in Class A, 16 in Class B, and 256 in Class C

 

Correct Answer: D

Explanation:

http://tools.ietf.org/html/rfc1918

 

 

QUESTION 66

What is required to allow devices that are using RFC 1918 addresses to communicate over the Internet?

 

A.

A private to public VLAN must be defined on the Internet border device.

B.

The Internet firewall must permit RFC 1918 addresses.

C.

VLAN translation is required on the Internet border device.

D.

Network address translation is required on the Internet border device.

 

Correct Answer: D

Explanation:

“The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical configuration, a local network uses one of the designated “private” IP address subnets (RFC 1918)”

http://en.wikipedia.org/wiki/Network_address_translation

 

 

QUESTION 67

What is the addressing format of IPv6?

 

A.

48-bit dotted decimal

B.

48-bit colon-delimited hexa
decimal

C.

64-bit dotted decimal

D.

64-bit colon-delimited hexadecimal

E.

128-bit dotted decimal

F.

128-bit colon-delimited hexadecimal

 

Correct Answer: F

Explanation:

“IPv6 addresses are represented as eight groups of four hexadecimal digits separated by colons. The length of an IPv6 address is 128 bits”

http://en.wikipedia.org/wiki/IPv6

 

 

QUESTION 68

Which statement describes the function of the OSI transport layer?

 

A.

It segments data from the system of the sending host and reassembles the data into a data stream on the system of the receiving host.

B.

It provides the connectivity and path selection between two host systems that may be located on geographically separated networks.

C.

It defines how data is formatted for transmission and how access to the physical media is controlled.

D.

It establishes, manages, and terminates sessions between two communicating hosts.

 

Correct Answer: A

Explanation:

http://en.wikipedia.org/wiki/Transport_layer

 

 

QUESTION 69

Which transport protocol requires a three-way handshake to establish a new connection?

 

A.

ARP

B.

UDP

C.

IP

D.

TCP

 

Correct Answer: D

Explanation:

“To establish a connection, TCP uses a three-way handshake.”

http://en.wikipedia.org/wiki/Transmission_Control_Protocol

 

 

QUESTION 70

What is the subnet mask for the network 172.16.0.0/21?

 

A.

255.255.0.0

B.

255.255.255.240

C.

255.255.248.0

D.

255.255.255.248

E.

255.255.248.240

F.

255.255.255.0

 

Correct Answer: C

 

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