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WorksheetsOCR J277 - 1.4 Network security
Total questions: 58
Worksheet time: 29mins
What are two advantages of networking computers?
Sharing resources and information
Increased security and privacy
Reduced hardware costs and redundancy
Improved software compatibility
What does WAN stand for?
Wide Area Network
Wireless Access Node
Web Application Network
Wide Access Network
The definition of 'bandwidth' is:
The range of frequencies within a given band, in particular that used for transmitting a signal.
The amount of data that can be transmitted in a fixed amount of time.
The maximum rate of data transfer across a given path.
The difference between the highest and lowest frequencies of a signal.
The acronym mbps stands for:
Megabytes per second
Megabits per second
Millibits per second
Microbits per second
Using the LOR framework, identify the impact that bandwidth can have on the performance of a network. Consider the speed of the network, the type of media being accessed, and the number of users.
Bandwidth affects only the speed of the network.
Bandwidth impacts the speed, type of media accessed, and number of users.
Bandwidth has no impact on network performance.
Bandwidth only affects the number of users.
What are the differences and similarities between a LAN and a WAN?
LAN and WAN are both types of networks, but LAN is local and WAN is wide area.
LAN is a type of network, while WAN is not.
LAN and WAN are the same type of network.
LAN is used for wide area networks, while WAN is for local networks.
A large supermarket chain is setting up a new client server network. What is meant by the term ‘client server network’?
A network model where multiple clients request and receive services from a centralized server.
A peer-to-peer network where each node can act as both a client and a server.
A network topology where all devices are connected in a circular fashion.
A type of network where data is transmitted in a token ring.
You plan to use a peer network model for a business. Which of the following are reasons why you might choose this network model?
Scalability and cost-effectiveness
Centralized control and security
Limited connectivity and high cost
Complex management and maintenance
You have connected your laptop to your home network using wireless technology. Label the different devices stated below:
Router
Router
WNIC
Wireless Network Interface Card
Modem
Modem
The purpose of a router is to:
connect different networks and direct data between them
store data permanently
provide power to devices
act as a firewall
What does DNS stand for?
Domain Name System
Dynamic Network Service
Digital Network System
Data Name Service
Place these steps in order in the flow chart:
Enter URL into browser
Enter URL into browser
DNS responds with details of the name server
Browser requests IP address of site from ISP
Name server responds with IP address of the host
ISP requests IP address from DNS server
Server hosting the site sends across content
DNS responds with details of the name server
ISP sends IP address to the browser
ISP asks name server for site IP address
What is the purpose of the flowchart shown in the image?
To illustrate a process
To display a hierarchy
To show a timeline
To compare data
Analyze the given flowchart and describe its purpose in a computer science context.
The flowchart illustrates a sorting algorithm.
The flowchart represents a database schema.
The flowchart shows a network topology.
The flowchart depicts a software development lifecycle.
What is the significance of the flowchart in programming?
To represent the flow of data in a program visually
To execute the program
To compile the code
To debug the program
Many fast broadband connections use fibre optic cable instead of copper. What are two reasons why fibre optic cable is the preferred choice?
Fibre optic cables have higher bandwidth and are less susceptible to interference.
Fibre optic cables are cheaper and easier to install than copper cables.
Fibre optic cables are more flexible and durable than copper cables.
Fibre optic cables consume less power and are more environmentally friendly.
Using cloud computing is useful to some businesses because:
it reduces IT costs by outsourcing hardware and software maintenance.
it complicates data management and increases costs.
it limits scalability and flexibility.
it requires businesses to maintain their own servers.
What is meant by the term ‘virtual network’?
A network that exists only in a virtual environment
A physical network with virtual components
A network that uses virtual reality technology
A network that is not connected to the internet
What is meant by the term VPN?
Virtual Private Network
Very Private Network
Virtual Public Network
Verified Private Network
You have a games console in your bedroom and a video streaming device in your lounge. You use both devices to watch movies. The Wireless Access Point is located in the lounge. You have found that you are able to stream movies at a far higher quality in the lounge than in your bedroom. Why is this?
The Wireless Access Point is closer to the video streaming device in the lounge.
The games console in the bedroom has a better internet connection.
The video streaming device in the lounge is of higher quality.
The lounge has better lighting for streaming.
Which of the following is a characteristic of a high-level programming language?
Machine code
Assembly language
Human-readable syntax
Binary code
2. The purpose of an operating system in a computer is to:
manage hardware and software resources
provide internet connectivity
run antivirus programs
design user interfaces
Match the following terms with their definitions:
CPU
Processes instructions
RAM
Temporary storage for data
Hard Drive
Permanent storage for data
Fill in the blank: The _______ is the brain of the computer.
CPU
GPU
RAM
Hard Drive
True or False: A compiler translates high-level code into machine code.
True
False
Place the following types of cables into order of speed, from slowest to fastest:
Cat 5, Cat 5e, Cat 6, Fibre Optic
Cat 5e, Cat 5, Cat 6, Fibre Optic
Fibre Optic, Cat 6, Cat 5e, Cat 5
Cat 5, Cat 6, Cat 5e, Fibre Optic
Fill in the table with whether each of the statements are true or false. 1. A peer-to-peer network has one central controlling computer. 2. Peer-to-peer networks are easier to set up than client-server networks. 3. Peer-to-peer networks allow individual devices to share files between each other. 4. Peer-to-peer networks are commonly used in large organisations. 5. It is easier to implement security procedures throughout a client server network than a peer to peer network.
A peer-to-peer network has one central controlling computer.
Peer-to-peer networks are easier to set up than client-server networks.
Peer-to-peer networks allow individual devices to share files between each other.
Peer-to-peer networks are commonly used in large organisations.
It is easier to implement security procedures throughout a client server network than a peer to peer network.
Using the following components, select the correct setup for a client server network. Components: Server, 2 x workstations, Switch, Printer.
Server connected to Switch, Switch connected to Workstations and Printer
Server connected to Workstations directly, Workstations connected to Printer
Server connected to Printer, Printer connected to Switch, Switch connected to Workstations
Workstations connected to each other, one connected to Server and Printer
What are two advantages of networking computers?
Sharing resources and information
Increased security and privacy
Reduced hardware costs and redundancy
Improved software compatibility
What does WAN stand for?
Wide Area Network.
Wireless Area Network.
Wired Area Network.
World Area Network.
What is the definition of 'bandwidth'?
Bandwidth is the amount of data that can be transmitted in a given period of time.
Bandwidth is the speed at which data is processed.
Bandwidth is the physical distance data travels.
Bandwidth is the type of data being transmitted.
What does the acronym mbps stand for?
Megabits Per Second.
Megabytes Per Second.
Millibits Per Second.
Microbits Per Second.
Using the LOR framework, write about the impact that bandwidth can have on the performance of a network. In your answer you might consider: The speed of the network, The type of media being accessed, The number of users.
Bandwidth affects the speed of the network, the type of media being accessed, and the number of users.
Bandwidth only affects the speed of the network.
Bandwidth only affects the type of media being accessed.
Bandwidth only affects the number of users.
What are the differences and similarities between a LAN and a WAN?
LAN and WAN are both types of networks, but LAN is local and WAN is wide area.
LAN and WAN are both types of networks, but WAN is local and LAN is wide area.
LAN and WAN are both types of networks, and both are local area networks.
LAN and WAN are both types of networks, and both are wide area networks.
A large supermarket chain is setting up a new client server network. What is meant by the term ‘client server network’?
A network model where multiple clients request and receive services from a centralized server.
A peer-to-peer network where each node can act as both a client and a server.
A network topology that connects all devices in a linear format.
A wireless network that connects devices without physical cables.
You plan to use a peer network model for a business. Describe two reasons why you have chosen this network model.
A peer network model is cost-effective and scalable.
A peer network model is complex and expensive.
A peer network model is outdated and inefficient.
A peer network model is only suitable for small businesses.
The purpose of a router is to:
connect different networks and direct data between them
store data permanently
provide power to devices
create software applications
DNS stands for:
Domain Name System
Dynamic Network Service
Digital Network System
Data Name Server
Place these steps in order in the flow chart:
Enter URL into browser
Enter URL into browser
DNS responds with details of the name server
Browser requests IP address of site from ISP
Name server responds with IP address of the host
ISP requests IP address from DNS server
Server hosting the site sends across content
ISP asks name server for site IP address
ISP sends IP address to the browser
Name server responds with IP address of the host
What is the correct order of steps for displaying a website to a user?
A) Browser receives website content, Server hosting the site sends across content, Website displayed to the user
B) Server hosting the site sends across content, Browser receives website content, Website displayed to the user
C) Website displayed to the user, Server hosting the site sends across content, Browser receives website content
Explain the process a browser follows to obtain the IP address of a website.
A browser uses a DNS server to resolve the domain name to an IP address.
A browser directly contacts the website server to get the IP address.
A browser uses a local cache to find the IP address without any external help.
A browser uses a search engine to find the IP address of a website.
Fill in the blank: After the browser requests the IP address of a site from the ISP, the ISP requests the IP address from the ________ server.
DNS
HTTP
FTP
SMTP
Many fast broadband connections use fibre optic cable instead of copper. What are two reasons why fibre optic cable is the preferred choice?
Fibre optic cables have higher bandwidth and are less susceptible to interference.
Fibre optic cables are cheaper and easier to install than copper cables.
Fibre optic cables are more flexible and durable than copper cables.
Fibre optic cables require less maintenance and have a longer lifespan than copper cables.
14. Why is using cloud computing useful to some businesses?
It reduces costs and increases efficiency.
It complicates business processes.
It requires more physical storage space.
It limits access to data.
15. What is meant by the term ‘virtual network’?
A network that exists only in a virtual environment
A physical network with virtual components
A network that uses virtual reality technology
A network that is not connected to the internet
16. What is meant by the term VPN?
Virtual Private Network
Very Private Network
Virtual Public Network
Verified Private Network
17. You have a games console in your bedroom and a video streaming device in your lounge. You use both devices to watch movies. The Wireless Access Point is located in the lounge. You have found that you are able to stream movies at a far higher quality in the lounge than in your bedroom. Why is this?
The lounge is closer to the Wireless Access Point, providing a stronger signal.
The games console has a weaker Wi-Fi receiver than the video streaming device.
The lounge has better acoustics for movie watching.
The bedroom walls block the Wi-Fi signal more than the lounge walls.
Place the following types of cables into order of speed, from slowest to fastest: Cat 5e, Cat 6, Fibre Optic, Cat 5.
Cat 5
Cat 5e
Cat 6
Fibre Optic
Fill in the table with whether each of the statements are true or false. Statement: A peer-to-peer network has one central controlling computer.
True
False
Fill in the table with whether each of the statements are true or false. Statement: Peer-to-peer networks are easier to set up than client-server networks.
True
False
Fill in the table with whether each of the statements are true or false. Statement: Peer-to-peer networks allow individual devices to share files between each other.
True
False
Fill in the table with whether each of the statements are true or false. Statement: Peer-to-peer networks are commonly used in large organisations.
True
False
Fill in the table with whether each of the statements are true or false. Statement: It is easier to implement security procedures throughout a client server network than a peer to peer network.
True
False
Using the following components, identify the correct setup for a client server network: Server, 2 x workstations, Switch, Printer.
Server connected to Switch, Switch connected to Workstations and Printer
Server connected directly to Workstations, Workstations connected to Printer
Server connected to Printer, Printer connected to Switch, Switch connected to Workstations
Workstations connected to Switch, Switch connected to Server and Printer
Examine the network diagram provided. Identify the central device that connects all other devices in the network.
Router
Switch
Hub
Modem
What is the primary function of a router in a network?
To create software applications
To connect different networks and direct data between them
To store data permanently
To provide power to devices
Which of the following is a benefit of using a client-server network model?
Limited scalability
Increased hardware costs
Decentralized data storage
Centralized management and control
Fill in the blank: The _______ is responsible for executing instructions in a computer.
RAM
Hard Drive
CPU
GPU
