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WorksheetsComputer Network Systems
Total questions: 1
Worksheet time: 46mins
What did the original network consist of?
A central mainframe computer with a number of terminals.
A series of interconnected personal computers.
A cloud-based server system.
A peer-to-peer network.
What is a Communication Network?
A set of products, concepts, and services that enable the connection of a computer system
A single computer connected to the internet
A type of software used for communication
A wireless device used for networking
What is a network?
Two or more computers linked together, usually with cables
A single computer with multiple users
A type of software for managing files
A wireless device for internet access
What is each device on a network called?
Node
Hub
Switch
Router
What are Peripheral Devices?
Hardware devices attached to a computer, usually through an input/output port
Software programs used for communication
Wireless devices for internet access
Types of network cables
Which of the following is an advantage of setting up a network?
Cost of installation
Equipment failure
Ability to share peripheral devices
Security
What is a disadvantage of setting up a network?
Access to shared files
Central administration of application programs and other software
Sharing a single internet connection
Administration and maintenance
Which of the following is NOT an advantage of setting up a network?
Access to databases
Ability to play networked games
Equipment failure
Central administration of application programs and other software
What is one of the benefits of having a network in terms of internet usage?
Sharing a single internet connection
Security
Cost of installation
Equipment failure
Which of the following is a disadvantage related to the cost of setting up a network?
Access to shared files
Cost of installation
Ability to share peripheral devices
Access to databases
Which type of network is based on a central server with many clients?
Client-Server Network
Peer-to-peer Network
Local Area Network (LAN)
Wide Area Network (WAN)
In which type of network do all nodes have equal status?
Client-Server Network
Peer-to-peer Network
Local Area Network (LAN)
Wide Area Network (WAN)
Which type of network requires users to log in to gain access to shared resources?
Client-Server Network
Peer-to-peer Network
Local Area Network (LAN)
Wide Area Network (WAN)
Which type of network is very popular for local area networks (LAN)?
Client-Server Network
Peer-to-peer Network
Wide Area Network (WAN)
Metropolitan Area Network (MAN)
In which type of network are users required to set up shared folders on their hard drive to enable file sharing?
Client-Server Network
Peer-to-peer Network
Local Area Network (LAN)
Wide Area Network (WAN)
What type of network is depicted in the diagram?
Peer-to-Peer Network
Client-Server Network
Mesh Network
Ring Network
Which of the following devices is NOT shown in the client-server network diagram?
MAC
Linux Thin Client
Router
PDA
Which operating system is mentioned in the diagram for an old PC?
Windows 95/98/2000
Linux Thin Client
Old PC-DOS
MAC
What type of connection is used to connect the devices to the internet in the diagram?
DSL
Fiber Optic
Satellite
Dial-Up
What type of network is depicted in the diagram?
Client-Server Network
Peer-to-Peer Network
Wide Area Network
Local Area Network
In a peer-to-peer network, which device is responsible for managing the network?
Central Server
Hub
Each workstation
Router
Which of the following devices is NOT shown as part of the peer-to-peer network in the diagram?
Shared Printer
Shared Scanner
Router
Hub
Which type of network is limited to a single geographical location such as a building or a group of buildings on a single site?
Wide Area Network (WAN)
Virtual Private Network (VPN)
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Which type of network connects computers that are hundreds and kilometers apart?
Local Area Network (LAN)
Virtual Private Network (VPN)
Wide Area Network (WAN)
Personal Area Network (PAN)
Which type of network uses encryption and other security measures to ensure that only authorized users can access it?
Local Area Network (LAN)
Wide Area Network (WAN)
Virtual Private Network (VPN)
Metropolitan Area Network (MAN)
Which type of network can be created by businesses and educational institutions to allow their employees and students to gain remote access to their LANs?
Local Area Network (LAN)
Wide Area Network (WAN)
Virtual Private Network (VPN)
Personal Area Network (PAN)
Which type of network services a work group or department within an organization?
Wide Area Network (WAN)
Virtual Private Network (VPN)
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Which component of a network is used as a central connection point when adding workstations to a network?
Workstations
Repeaters
Hub
Network interface card
What is the simplest form of signal booster designed to tie two long network cable segments together?
Routers
Repeaters
Bridges
Gateways
Which component of a network allows two or more networks to exchange data regardless of their specific topology?
Network operating system
Network interface card
Bridges
Workstations
What is a combination of hardware and software which links two different types of networks?
Gateways
Routers
Hub
Repeaters
Which device is used for connecting different networks and directing data traffic through them?
Network interface card
Routers
Workstations
Network operating system
What is a controller card inside a computer or a peripheral device that directly connects the device to the internet?
Network operating system
Hub
Network interface card
Bridges
Which component of a network is specifically designed to allow a computer to access a network and become a client on the network?
Network operating system
Workstations
Repeaters
Gateways
Which type of server is used to store files and data that are to be shared by users of the network?
Web servers
Proxy servers
File servers
Mail servers
What is the primary function of web servers?
Store and process email
Host websites for retrieval by users on the internet
Acts as an intermediary between an end user and the internet
Dedicated to processing printing requests
Which type of server acts as an intermediary between an end user and the internet?
Print servers
Proxy servers
File servers
Web servers
What is the main purpose of print servers?
Store and process email
Host websites
Process printing requests from users on a LAN
Store files and data
Which type of server is responsible for storing and processing email and managing email accounts?
File servers
Web servers
Proxy servers
Mail servers
What is a protocol in the context of computer networks?
A. A set of rules used by all the devices on a network
B. A type of computer hardware
C. A software application for data processing
D. A method of encrypting data
Which of the following protocols is responsible for controlling the connection between two computers on the internet?
A. IPX/SPX
B. NetBIOS
C. TCP
D. AppleTalk
What does IP manage in the TCP/IP protocol?
A. The connection between two computers
B. The movement of data in individual packets
C. The encryption of data
D. The hardware configuration
Which of the following is NOT a type of protocol mentioned in the document?
A. TCP/IP
B. IPX/SPX
C. NetBIOS and NetBEUI
D. HTTP/HTTPS
How many types of network topologies are there?
2
3
4
5
Which of the following is NOT a type of network topology?
Star topology
Ring topology
Bus topology
Tree topology
Which of the following is a type of network topology?
Mesh topology
Star topology
Hybrid topology
Hierarchical topology
Which of the following is an advantage of the Star topology?
Each node has its own cable and does not need to share the line with any other node.
A single cable is used to connect all the nodes.
They are easy and cheap to set up.
The ring must be broken to add new nodes.
What is a disadvantage of the Ring topology?
If the central node fails, the entire network will cease to operate.
If the ring is broken, or the cable is faulty, the entire network will stop working.
Nodes can be added and removed easily.
It is easy to identify a faulty cable.
Which topology is described as being easy and cheap to set up?
Star
Ring
Bus
Mesh
What is a disadvantage of the Bus topology?
More cabling is required than for other network topologies.
The ring must be broken to add new nodes.
Collisions (data traffic jams) can affect networks with many nodes.
New links to the central node can be added easily.
Which of the following is an advantage of the Ring topology?
Each node has its own cable.
A single cable is used to connect all the nodes.
More cabling is required.
It is easy to identify a faulty cable.
What is data transmission?
The act of moving any kind of information from one space to another
The act of storing information in a database
The act of deleting information from a computer
The act of encrypting information for security
In which data transmission mode can data travel in one direction only?
Simplex
Half Duplex
Full Duplex
Multiplex
Which data transmission mode is used in radio, telegrams, and television?
Simplex
Half Duplex
Full Duplex
Multiplex
In half duplex data transmission mode, how does data travel?
In both directions, but not at the same time
In one direction only
In both directions simultaneously
In multiple directions at once
Which data transmission mode is used in two-way and ham radios?
Half Duplex
Simplex
Full Duplex
Multiplex
What is a characteristic of full duplex data transmission mode?
Data can flow in both directions simultaneously
Data can flow in one direction only
Data can flow in both directions, but not at the same time
Data can flow in multiple directions at once
Which data transmission mode is used by the current telephone system?
Full Duplex
Simplex
Half Duplex
Multiplex
What is the definition of baud rate?
The number of bits transmitted each second.
The number of distinct signal events or timing intervals in a second.
The difference between the highest and lowest signal frequencies.
The speed at which data can be transferred from one point to another.
What does bits per second (bps) measure?
The number of distinct signal events in a second.
The number of bits transmitted each second.
The difference between the highest and lowest signal frequencies.
The speed at which data can be transferred from one point to another.
What is the relationship between baud rate and bits per second (bps) in a single message containing five bits sent out in one second?
Baud rate is higher than bps.
Baud rate is lower than bps.
Baud rate and bps are the same.
Baud rate and bps are unrelated.
What is bandwidth?
The number of bits transmitted each second.
The number of distinct signal events in a second.
The difference between the highest and lowest signal frequencies.
The speed at which data can be transferred from one point to another.
What is a baseband link?
A link that uses the entire available bandwidth for a single signal.
A link that splits the bandwidth into many smaller separate bands.
A link that measures the number of bits transmitted each second.
A link that measures the number of distinct signal events in a second.
What is a broadband link?
A link that uses the entire available bandwidth for a single signal.
A link that splits the bandwidth into many smaller separate bands.
A link that measures the number of bits transmitted each second.
A link that measures the number of distinct signal events in a second.
Which of the following is a characteristic of a coaxial cable?
It is made of pairs of insulated copper wire twisted together.
It is made of stiff copper wire surrounded by insulating material.
It is made of optical fibers.
It is made of plastic.
What is the main advantage of a twisted pair cable?
It is very expensive.
It is very difficult to install.
It is cheap to purchase and install.
It has a high data transfer rate.
What is the purpose of twisting the pairs of copper wire in a twisted pair cable?
To increase the length of the cable.
To reduce interference.
To make the cable more flexible.
To increase the weight of the cable.
What does UTP stand for in the context of twisted pair cables?
Unshielded Twisted Pair
Universal Twisted Pair
Uninsulated Twisted Pair
Unified Twisted Pair
What does a light pulse signal in an optical fibre cable?
A) A '0' bit
B) A '1' bit
C) A '2' bit
D) A '3' bit
Which of the following is NOT an advantage of optical fibre cables over copper wire cables?
A) It is not affected by electrical interference.
B) It is thicker and heavier than coaxial cables.
C) It provides greater security.
D) It has a high transmission speed and low error rate.
What is one of the disadvantages of optical fibre cables?
A) They are inexpensive to make and repair.
B) They do not need transponders at each end of the link.
C) They are affected by electrical interference.
D) They are expensive to make and repair.
Why do optical fibre cables provide greater security?
A) Because they are thicker and heavier.
B) Because they are difficult to intercept.
C) Because they are affected by electrical interference.
D) Because they have a high transmission speed.
What is required at each end of an optical fibre link to convert data between light pulses and electrical signals?
A) Modems
B) Routers
C) Transponders
D) Switches
Which data transmission medium is described as having high bandwidth and can be used where cabling is not possible or too expensive?
Coaxial cable
Unshielded twisted pair
Optical fibre
Microwave
What is a disadvantage of using coaxial cable for data transmission?
Expensive
Data loss due to electromagnetic interference
Slow data transfer
Subject to interference by weather
Which data transmission medium has a data transmission rate of over 400 Mbps?
Coaxial cable
Unshielded twisted pair
Optical fibre
Microwave
What is an advantage of using unshielded twisted pair cables?
High bandwidth
Easily terminated
Can be used where cabling is not possible or too expensive
Shielding allows many cables to be combined into larger cables
Which data transmission medium is subject to interference by weather?
Coaxial cable
Unshielded twisted pair
Optical fibre
Microwave
What is the maximum data transmission rate for unshielded twisted pair cables?
Up to 10 Mbps
10 Mbps to 1 Gbps
Over 400 Mbps
Over 2 Gbps
Which factor is described as a trade-off between what is desired and what is affordable in network development projects?
Distance
Cost
The number of nodes
Sustainability and expansion
What is an important factor to consider when deciding what type of cabling to use in a network?
Cost
The number of nodes
Distance
Sustainability and expansion
In a network, what are the devices at the end of a cable, such as workstations and printers, called?
Nodes
Cables
Routers
Switches
When designing a network, what must be considered to ensure it can be maintained and expanded easily?
Distance
Cost
The number of nodes
Sustainability and expansion
What is a firewall?
A device that stores data
A hardware or software solution that controls access to a protected network
A type of virus
A method of encrypting data
Which of the following is one of the philosophies used by firewall managers during firewall configuration?
Allow all incoming transmissions except designated packets
Allow all outgoing transmissions except designated packets
Block all outgoing transmissions except designated packets
Allow all incoming and outgoing transmissions
What is the other philosophy used by firewall managers during firewall configuration?
Allow all outgoing transmissions except designated packets
Block all incoming transmissions except designated packets
Allow all incoming and outgoing transmissions
Block all outgoing transmissions except designated packets
What is one of the functions of a proxy server?
To act as a direct communication link between a client and a host
To act as a firewall preventing direct communication between a client and a host
To store sensitive data
To increase the speed of the internet connection
What is a 'honey pot' in the context of proxy servers?
A site with sensitive data to attract legitimate users
A site without sensitive data to trick hackers
A site that increases network speed
A site that acts as a backup server
