2. Communication
A section of Computer Science, 9618
Listing 10 of 11 questions
The following incomplete table contains four network devices and their descriptions. Complete the table by writing the missing devices and missing descriptions. Device Description Receives and sends data between two networks operating on the same protocol Wireless Network Interface Card (WNIC) Restores the digital signal so it can be transmitted over greater distances Wireless Access Point (WAP) Describe three differences between fibre-optic cables and copper cables. Ethernet uses Carrier Sense Multiple Access/Collision Detection (CSMA/CD). Describe CSMA/CD.
9618_s22_qp_12
THEORY
2022
Paper 1, Variant 2
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Andy likes to play computer games. Andy uses several input devices to play the games. These include a keyboard and a microphone. Describe the principal operation of a microphone. Andy plays some of the computer games over the internet. He has several devices that connect wirelessly to the router in his house. Identify the topology of Andy’s home network. Justify your choice. Topology Justification The router has a wireless access point (WAP) to allow the devices to connect wirelessly. Identify three functions of the router in Andy’s network.
9618_w21_qp_12
THEORY
2021
Paper 1, Variant 2
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A company has a LAN (local area network). Give two benefits of connecting computers to a LAN. Give two characteristics of a LAN. One of the company’s offices has one server and four computers connected in a star topology. Draw a diagram to show the layout of the office’s star topology. Computers can be connected using Ethernet. Describe what is meant by Ethernet. The network runs as a thick‑client model. Describe what is meant by a thick‑client model.
9618_s23_qp_12
THEORY
2023
Paper 1, Variant 2
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A university has two sites. Each site has several computer rooms. The computers are all connected as a WAN (wide area network). Identify two differences between a WAN and a LAN (local area network). The network uses different topologies in different areas of the sites. In one building there are five computers connected in a mesh topology. Describe what is meant by a mesh topology. Give two advantages of using a mesh topology instead of a bus topology. The computers in one room are set up as thin-clients in a client-server model. Describe the role of the different computers in this model. Students can connect their devices to the university network using cables or a wireless connection. Explain the benefits to the students of allowing them to use both wired and wireless connections. One site has split the network into several subnetworks. An IP address in a subnetwork is divided into two parts. Identify and describe the two parts of an IP address in a subnetwork.
9618_s23_qp_13
THEORY
2023
Paper 1, Variant 3
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A school is setting up a network within one of its buildings. State whether the network will be a LAN (local area network) or a WAN (wide area network). Justify your choice. One classroom in the building has 30 computers. The computers need to be connected to the network. Each computer has a network interface card (NIC). Identify two possible devices that can be used to physically connect the 30 computers to the rest of the network. The school has several laptops. Each laptop has a Wireless Network Interface Card (WNIC). Describe the functions of a Wireless Network Interface Card.
9618_w21_qp_11
THEORY
2021
Paper 1, Variant 1
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A school is setting up a network within one of its buildings. State whether the network will be a LAN (local area network) or a WAN (wide area network). Justify your choice. One classroom in the building has 30 computers. The computers need to be connected to the network. Each computer has a network interface card (NIC). Identify two possible devices that can be used to physically connect the 30 computers to the rest of the network. The school has several laptops. Each laptop has a Wireless Network Interface Card (WNIC). Describe the functions of a Wireless Network Interface Card.
9618_w21_qp_13
THEORY
2021
Paper 1, Variant 3
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A Local Area Network (LAN) consists of four computers, one server and a switch. The LAN uses a star topology. Complete the following diagram to show how the hardware is connected. Server Computer Computer Computer Computer Switch A router is attached to one of the devices on the LAN shown in part to connect the LAN to the internet. Identify the device. Give a reason for your choice. Device Reason Describe the role and function of the router in the network.
9618_w22_qp_12
THEORY
2022
Paper 1, Variant 2
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The diagram shows the hardware and software used to retrieve files stored on the cloud. Laptop Internet Service Provider A X B Firewall Complete the following table by writing the answer for each row. Answer The name of device A that allows the laptop to connect to the internet A type of cloud, X An example of an application, B, that can run on the cloud Give one advantage and two disadvantages of transmitting data using satellites instead of copper cables. Advantage 1 Disadvantage 1 Disadvantage 2 Local Area Networks (LANs) can be made up of several subnetworks. Give two benefits of dividing a network into subnetworks by subnetting the LAN. A subnet mask is used when subnetting a LAN. Two devices on the LAN are located in different subnetworks. The IP addresses and corresponding subnet masks are shown: Device IP address Subnet mask 10.10.12.1 255.0.0.0 192.168.12.4 255.255.255.0 Identify the following network ID and host ID. The network ID for the device with the IP address 10.10.12.1 The host ID for the device with the IP address 192.168.12.4
9618_w22_qp_13
THEORY
2022
Paper 1, Variant 3
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Seth uses a computer for work. Complete the following descriptions of internal components of a computer by writing the missing terms. The transmits the signals to coordinate events based on the electronic pulses of the . The carries data to the components, while the carries the address where data needs to be written to or read from. The performs mathematical operations and logical comparisons. Describe the ways in which the following factors can affect the performance of his laptop computer. Number of cores Clock speed Seth accesses both software and data using cloud computing. Give two benefits of storing data using cloud computing. Give two drawbacks of Seth using cloud computing. Draw one line from each term to its most appropriate description. Term Description Public IP address Private IP address Dynamic IP address Static IP address It is only visible to devices within the Local Area Network (LAN) It increments by 1 each time the device connects to the internet A new one is reallocated each time a device connects to the internet It can only be allocated to a router It is visible to any device on the internet It does not change each time a device connects to the internet
9618_s21_qp_12
THEORY
2021
Paper 1, Variant 2
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Questions Discovered
11