1. What is a benefit of networking your computer with other computers ?

Increase in the computer’s speed

Sharing of cables to cut down on expenses and clutter

You have another computer if yours has a breakdown

Sharing of resources to cut down on the amount of equipment needed

Answer: Sharing of resources to cut down on the amount of equipment needed

Explanation:

The benefit of networking your computer with other computers is (e) sharing of resources to cut down on the amount of equipment needed. By networking computers together, you can share hardware resources such as printers, scanners, and storage devices, as well as software resources such as applications and databases. This can lead to cost savings, increased efficiency, and improved collaboration among users. Networking also allows for the sharing of an internet connection, which can provide greater speed and reliability compared to individual connections.


2. The slowest transmission speeds are those of ?

twisted-pair wire

coaxial cable

fiber-optic cable

microwaves

Answer: twisted-pair wire

Explanation:

The slowest transmission speeds are those of twisted-pair wire. Twisted-pair wire is a type of cable made up of two copper wires twisted together. It is commonly used for telephone lines and Ethernet networks. However, it has a relatively low bandwidth and is susceptible to interference from other electronic devices and nearby cables. As a result, it is typically used for low-speed data transmission over short distances. Coaxial cable is a type of cable that consists of a central conductor surrounded by a layer of insulation, a metallic shield, and an outer sheath. It is commonly used for cable television and high-speed internet connections, and can support higher bandwidths and longer distances than twisted-pair wire. Fiber-optic cable is a type of cable that uses thin strands of glass or plastic to transmit data using light. It is capable of very high bandwidths and long distances, making it ideal for high-speed data transmission over long distances. Microwaves are a type of electromagnetic radiation that can be used to transmit data wirelessly. They are commonly used for communication between satellites and ground stations, and for wireless point-to-point communication. They can support high bandwidths and long distances, but their performance can be affected by atmospheric conditions. Therefore, the correct answer is (a) twisted-pair wire.


3. What device separates a single network into two segments but lets the two segments appear as one to higher protocols ?

Switch

Bridge

Gateway

Router

Answer: Bridge

Explanation:

A bridge is a device that connects two or more network segments, allowing data to flow between them. The primary function of a bridge is to filter and forward network traffic based on the media access control (MAC) addresses of the devices connected to each segment.


4. Which of the following communications modes support two-way traffic but in only one direction of a time ?

simplex

half-duplex

three-quarters duplex

All of the above

Answer: half-duplex

Explanation:

The correct answer is (b) half-duplex. In half-duplex communication mode, two devices can communicate with each other, but only one can transmit at a time, while the other can only receive. This means that two-way traffic is possible, but only in one direction at a time.


5. A distributed network configuration in which all data/information pass through a central computer is ?

bus network

star network

ring network

Point-to-point network

Answer: star network

Explanation:

Star network is a distributed network configuration in which all data/information pass through a central computer. In a star network, each device on the network is connected to a central hub or switch, which acts as a central point of communication for all devices. All data transmitted between devices on the network must pass through the central hub or switch, which enables the central computer to manage the flow of information and coordinate communications between devices. Other types of distributed network configurations include: Bus network: In a bus network, all devices are connected to a common communication line or bus, which enables data to be transmitted directly between devices without the need for a central computer. Ring network: In a ring network, devices are connected in a circular fashion, with each device acting as a repeater to amplify and retransmit data signals around the ring. Point-to-point network: In a point-to-point network, devices are connected directly to each other, enabling data to be transmitted between devices without the need for a central hub or switch. Therefore, the correct answer is (b) star network.


6. Frames from one LAN can be transmitted to another LAN via the device ?

Router

Bridge

Repeater

Modem

Answer: Bridge

Explanation:

Frames from one LAN can be transmitted to another LAN via the device Router.


7. A term related to sending data to a satellite is ?

downlink

modulate

demodulate

uplink

Answer: uplink

Explanation:

The term related to sending data to a satellite is (d) uplink.


8. The collection of links throughout the Internet creates an interconnected network called the __________ ?

WWW

Web

World Wide Web

All of the above

Answer: World Wide Web

Explanation:

The correct answer is (c) World Wide Web


9. An example of a telecommunications device is a ?

keyboard

mouse

printer

modem

Answer: modem

Explanation:

Modem is an example of a telecommunications device


10. Networks are monitored by security personnel and supervised by __________ who set(s) up accounts and passwords for authorized network users ?

IT managers

the government

network administrators

password administrators

Answer: network administrators

Explanation:

Networks are monitored by security personnel and supervised by Network administrators who set(s) up accounts and passwords for authorized network users