Exploring Computer Hardware and Networking

What are the main types of computer hardware?

• Software applications and programs

• The main types of computer hardware are: input devices, output devices, storage devices, processing units, and networking components.

• Motherboards and CPUs only

• Web browsers and operating systems

Define the star topology in networking.

• A star topology is a network configuration where all devices are connected to a central hub or switch.

• A star topology has no central hub or switch.

• In a star topology, devices communicate directly with each other.

• A star topology connects devices in a linear fashion.

What is the purpose of an IP address?

• To encrypt data transmitted over the network.

• To assign a unique username to each user.

• The purpose of an IP address is to identify and locate devices on a network.

• To provide internet access to devices.

Explain the concept of subnetting.

• Subnetting is only used for wireless networks.

• Subnetting allows for the creation of smaller networks within a larger network, improving management and security.

• Subnetting eliminates the need for IP addresses in a network.

• Subnetting is the process of merging multiple networks into one.

List the key features of the 802.11ac wireless standard.

• Maximum theoretical throughput of 1 Gbps

• Supports only 2 spatial streams

• Supports up to 8 spatial streams, Channel widths of 20, 40, 80, and 160 MHz, Maximum theoretical throughput of 3.5 Gbps, Uses 256-QAM modulation for higher data rates, Multi-User MIMO (MU-MIMO) for simultaneous data transmission to multiple devices, Beamforming technology for improved signal strength and range, Backward compatibility with 802.11a/b/g/n standards

• Uses 64-QAM modulation for lower data rates

What is the difference between a hub and a switch?

• A hub operates at the application layer, while a switch operates at the network layer.

• A hub connects devices directly, while a switch connects to a router.

• A hub broadcasts data to all devices, while a switch sends data only to the intended recipient.

• A hub can filter data packets, while a switch cannot.

Describe the bus topology and its advantages.

• Bus topology allows for easy installation and requires less cable than other topologies, making it cost-effective. It is also easy to understand and implement.

• Bus topology is not suitable for small networks.

• Bus topology requires more cable than star topology.

• Bus topology is the most complex to implement.

What is a public IP address?

• A public IP address is an IP address that is accessible over the internet.

• A public IP address is only used for local networks.

• A public IP address is a temporary address assigned to devices.

• A public IP address is an IP address that is not accessible over the internet.

How does WPA2 enhance network security?

• WPA2 uses outdated encryption methods like WEP.

• WPA2 enhances network security through stronger encryption (AES) and robust authentication mechanisms.

• WPA2 relies solely on physical security measures.

• WPA2 does not require any authentication for users.

What are the components of a computer's CPU?

• Graphics Processing Unit (GPU)

• Motherboard

• Power Supply Unit (PSU)

• Arithmetic Logic Unit (ALU), Control Unit (CU), Registers, Cache Memory, Bus Interface