Basic Web Hardware 2 (Network)​

What is a computer network ?

• A computer network is a system of interconnected computers and devices that communicate and share resources.
• A computer network is a collection of unrelated devices.
• A computer network is a single computer with multiple users.
• A computer network is a type of software application.

What are some pieces of network hardware ?

• Servers

• Network cables
• Printers
• Routers, switches, hubs, modems, access points

What is the difference between a switch and a router ?

• A switch connects different networks, while a router connects devices within the same network.
• A switch connects devices within the same network, while a router connects different networks.
• A switch is used for wireless connections, while a router is used for wired connections.
• A switch routes data packets, while a router switches data between devices.

What is the function of access points ?

• Access points enable wireless (Wifi) connectivity to a wired network.

• Access points increase the speed of wired connections.
• Access points are used for data storage.
• Access points provide wired connections only.

What is the network layer in TCP/IP model

• The network layer is responsible for routing and forwarding packets in the TCP/IP model.
• The network layer handles application data in the TCP/IP model.
• The network layer is responsible for establishing physical connections.
• The network layer encrypts data for secure transmission.

What are IP Addresses ?

• IP addresses are unique addresses for each device (or network interface) on a network.

• IP addresses are used only for email communication.
• IP addresses are physical addresses of devices.
• IP addresses are temporary codes for internet browsing.

What is HTTP ?

• HTTP is a type of web browser.
• HTTP is a programming language.
• HTTP is a database management system.
• HTTP is a protocol used for transferring hypertext on the web.

What wiretapping and how does it relate to HTTPS ?

• Wiretapping is the interception of communications, and HTTPS protects against it by encrypting data.
• Wiretapping is only legal in certain countries.
• HTTPS is a type of malware used for spying.
• Wiretapping is a method of securing data transmission.

What is the job of a DNS (Domain Name Server) ?

• To store website content on servers.
• To manage email delivery for domains.
• To provide web hosting services.
• The job of a DNS is to resolve domain names (like google.com) to IP addresses.

What is the function of nslookup util on windows ?

• To display system information and settings.
• The function of nslookup on Windows is to query DNS to obtain domain name or IP address mapping.
• To perform file transfers over the network.
• To manage network connections on Windows.