Worksheets0417 chapter 4 computer network 4.1.6
Total questions: 34
Worksheet time: 17mins
What is a Local Area Network (LAN)?
A network that spans a large geographical area
A network within a single building or close geographical area
A network that connects computers across the world
A network that only exists in the cloud
In a LAN, what is the role of a router?
To connect the LAN to external networks
To spread viruses throughout the network
To slow down access to external networks
To monitor data traffic within the network
How can viruses spread more easily in a LAN?
Through shared resources
Through the main server
Through external networks
Through standalone computers
Which of the following is an advantage of using LANs?
Easier spread of viruses
Slower access to external networks
Sharing of resources such as hardware and software
Increased security risk
What happens if the main server in a LAN breaks down?
The network will function more efficiently
The network will no longer function properly
The network will be free from viruses
The network will have faster access to external networks
What is typically shared among computers in a LAN?
Hardware resources like printers and scanners
Personal files of the users
The operating system
The computer’s power supply
How does a LAN allow easy communication between its users?
Through postal mail
Through telephone calls
Through simple text messaging between computers on the network
Through face-to-face meetings
Who ensures the security and use of the LAN is constantly monitored?
The router
The main server
The network administrator
The internet service provider
Why might there be queues for shared resources in a LAN?
Because of slow internet speed
Because of power outages
Because multiple users might need to use the same resource at the same time
Because of software updates
Why is there an increased security risk in a LAN compared to stand-alone computers?
Because LANs are always connected to the internet
Because LANs use outdated security protocols
Because if one computer in the network gets compromised, it can affect others
Because stand-alone computers have stronger firewalls
How do Wireless LANs (WLANs) differ from traditional LANs?
WLANs use wires and cables for connection
WLANs provide wireless network communications over short distances
WLANs cannot connect to the internet
WLANs do not allow multiple devices to connect
What devices are known as access points (APs) in a WLAN?
Devices that block infrared signals
Devices that connect to the internet
Devices that are connected into a wired network at fixed locations
Devices that are used by end-users to access the WLAN
Why do most commercial LANs need several APs?
To increase the cost of the network
To slow down the network speed
To permit uninterrupted wireless communications due to limited range
To make the network more complex
What technology do APs use in a WLAN?
Narrowband radio frequency
Ultraviolet signals
Spread-spectrum technology or infrared
Bluetooth technology
How do end-users access the WLAN?
Through a special password
Through wireless LAN adapters built into their devices
Through a wired connection
Through a satellite connection
Which type of networking is easier to expand and does not require connecting devices using cables?
Wireless networking
Wired networking
Both
Neither
Which type of networking produces a more reliable and stable network but may have interference issues?
Wireless networking
Wired networking
Both
Neither
Which type of networking gives devices increased mobility, as long as they are within range of the Access Points (APs)?
Wired networking
Wireless networking
Both
Neither
In which type of networking is data less secure, making it essential to protect data transmissions using encryption?
Wireless networking
Wired networking
Both
Neither
Which type of networking can lead to hazards such as tripping, overheating of connections, and disconnection of cables during routine office cleaning?
Wireless networking
Wired networking
Both
Neither
In which type of networking is it possible for signals to be stopped by thick walls and have areas of variable signal strength leading to ‘drop out’?
Wireless networking
Wired networking
Both
Neither
Which type of networking tends to be cheaper overall despite the need to buy and install cable?
Wireless networking
Wired networking
Both
Neither
In which type of networking do devices lose the ability to be mobile and must be close enough for cable connections?
Wireless networking
Wired networking
Both
Neither
Which type of networking continues to improve its data transmission rate, although it is still slower than the other?
Wireless networking
Wired networking
Both
Neither
Where are Wide Area Networks (WANs) typically used?
Where computers or networks are situated close to each other
Where computers or networks are situated a long distance from each other geographically
Where computers or networks are in the same room
Where computers or networks are in the same city
How can a number of Local Area Networks (LANs) form a WAN?
By using a server
By using a router
By using a switch
By using a firewall
What is one of the most common examples of the use of a WAN?
The network of smartphones
The network of personal computers
The network of ATMs used by banks
The network of gaming consoles
What do WANs usually make use of due to the long distances between devices?
Private communications network
Public communications network such as telephone lines or satellites
Infrared signals
Bluetooth technology
What is the typical distance range for a WAN according to the given guide for deciding the ‘size’ of a network?
1 km to 100 km
10 m to 1000 m (1 km)
100 km to over 1000 km
Less than 10 m
What can WANs use apart from public communications networks for connectivity?
Fiber optic cables only within a building
Dedicated or leased communication lines
Short-range Bluetooth connections
Local Wi-Fi networks only
Why might WANs opt to use dedicated or leased communication lines?
To increase the range of the network
To slow down data transmission rates
To reduce expenses and increase security
To make the network less reliable
In a typical WAN, what are end systems and intermediate systems?
Different types of servers used in the network
Different components of the network distinguished by their roles and positions
Various software applications used in the network
Different types of cables used in the network
How does the distance between each system in a WAN affect its operation?
It doesn’t have any significant impact
It can be considerable, especially if run by a multinational company
It increases the speed of data transmission
It reduces the security risks
How does the ‘size’ of a Metropolitan Area Network (MAN) compare to that of a WAN and LAN according to the given guide?
It is larger than a LAN (1 km to 1000 m) but smaller than a WAN (100 km to over 1000 km)
It is larger than both LAN and WAN
It is smaller than both LAN and WAN
It is same as that of a LAN but smaller than a WAN
