Ep Dec 2008

Question 1

The type of network which allows the computers to act as equal partners and each computer can take on the client function or the server function is called

Accepted Answer

Peer-to-Peer network.

Answer

Host-Oriented network.

Answer

Node-Oriented network.

Answer

Connection-Oriented network.

Question 2

One example of routing protocols is

Accepted Answer

RIP.

Answer

ROP.

Answer

RUP.

Answer

RTP.

Question 3

A technician has installed wireless NIC cards into all computers for a small company. What equipment should the technician use to setup WLAN in order to connect these computers?

Accepted Answer

Access Point

Answer

Hub

Answer

Switch

Answer

Repeader Point

Question 4

IEEE802.11a wireless standard is capable of achieving a data throughput of

Accepted Answer

54 Mbps.

Answer

108 Mbps.

Answer

256 Mbps.

Answer

512 Mbps.

Question 5

What is the term used  to describe the OSI network layer protocol data unit?

Accepted Answer

Packet

Answer

Parcel

Answer

Sectors

Answer

Segments

Question 6

When an Ethernet segment experiences a collision, why do hosts use a random delay before attempting to retransmit a frame?

Accepted Answer

A random delay helps prevent the stations from experiencing another collision during the transmission.

Answer

A random delay is used to ensure a collision-free link.

Answer

A random delay value for each device is assigned by the manufacturer.

Answer

A standard delay value could not be agreed upon among networking device vendors.

Question 7

Wireless LAN is primarily deployed in which one of the following roles?

Accepted Answer

Access.

Answer

Application.

Answer

Backbone.

Answer

Core.

Question 8

What type of media would be most appropriate for connecting two buildings which are 900m apart?

Accepted Answer

Fiber-Optic Cable

Answer

Coaxial cable.

Answer

Shielded twisted pair cable

Answer

Unshielded twisted pair cable

Question 9

The function of  a wireless residential gateway is to

Accepted Answer

connect a small number of wireless nodes to a single device for Layer 2 and Layer 3 connectivity to the Internet or to another work.

Answer

increase the bandwidth of a network.

Answer

provide MAC addresses for all hosts.

Answer

increase the throughput of a network.

Question 10

what is the term used to describe the actual layout of the wires, end users devices and network devices?

Accepted Answer

Physical Topology

Answer

Attenuation

Answer

Bandwidth

Answer

Impedance

Question 11

The physical layer of the OSI model

Accepted Answer

encodes the data link frame into a pattern of 1s and 0s(bits) for transmission on the medium.

Answer

establishes, manages and terminates virtual circuits.

Answer

encapsulates the network layer information in a frame.

Answer

establishes, manages and terminates session between applications.

Question 12

In an Ethernet LAN, how does the NIC know it can transmit data?

Accepted Answer

An Ethernet NIC transmits data after listening for the absence of a signal media.

Answer

An Ethernet NIC transmits data when it senses a collision.

Answer

An Ethernet NIC transmits data as soon as the frame is received.

Answer

An Ethernet NIC transmits data as soon as the NIC receives a token.

Question 13

Which one of the following is the benfit of  a Client/Server network?

Accepted Answer

Provides a better security.

Answer

Does not required a dedicated network administrator.

Answer

Does not require expensive specialized network administrative and operational software.

Answer

Does not have a single point of failure where user data is still available when the server is down.

Question 14

A wireless access point is a

Accepted Answer

half-duplex device.

Answer

simplex device.

Answer

full-duplex device.

Answer

half-simplex device.

Question 15

The purpose of the DHCP server on a network is to

Accepted Answer

assign IP addresses dynamically to hosts.

Answer

resolves host names to IP addresses.

Answer

resolves IP addresses to MAC addresses.

Answer

assign MAC addresses dynamically to a host.

Question 16

Which device extends collision domain in an Ethernet network?

Accepted Answer

Hub.

Answer

Bridge.

Answer

Router.

Answer

Switch.

Question 17

Which field is inside an 802.3 Ethernet frame?

Accepted Answer

Frame check sequence.

Answer

Token.

Answer

Vendor.

Answer

Media tyoe identifier.

Question 18

Which of the following is a technology used in WLAN?

Accepted Answer

Narrowband.

Answer

Processband.

Answer

Narrow Spectrum.

Answer

Process Spectrum.

Question 19

The primary responsibility of the transport layer is to

Accepted Answer

Define end-to-end connectivity between host applications.

Answer

Allow access to the network media.

Answer

Provide data represention and encoding.

Answer

Select paths through the network for data to travel.

Question 20

Which is an example of a routed protocol?

Accepted Answer

IPX.

Answer

FTP.

Answer

HTTP.

Answer

STP.

Question 21

Why are 802.11g wireless devices backward compatible with 802.11b wireless devices?

Accepted Answer

Both 802.11b and 802.11g devices operate in the 2.4 GHz ISM bands.

Answer

Both 802.11b and 802.11g devices operate in the 5 GHz UNII bands.

Answer

Both 802.11b and 802.11g devices operate at a maximum data throughput of 150Mbps.

Answer

Both 802.11b and 802.11g devices operate at a maximum data throughput of 200Mbps.

Question 22

Which interface on a router should be used to provide physical connectivity for a wide-area network?

Accepted Answer

Serial.

Answer

Console.

Answer

Ethernet.

Answer

Token Ring.

Question 23

Which of the following is the approximate number of hosts supported in a Cass A unsubnetted network?

Accepted Answer

16,000,000

Answer

250

Answer

65,000

Answer

32,000,000

Question 24

If an application uses a protocol that exchanges data without using widowing or flow control and relies much on higher layers protocols for reliability, which protocol and transfer methods are being used?

Accepted Answer

UDP, Connectionless.

Answer

TCP, Connectionless.

Answer

TCP, Connection-Oriented.

Answer

UDP, Connection-Oriented.

Question 25

What is the one advantage of defining network communication by the seven layers of the OSI model?

Accepted Answer

It facilitates modular engineering.

Answer

It eliminates collision.

Answer

It increases the number of users accessing the LAN network.

Answer

It reduces attenuation and noise of the media used in the WAN network.