CSIT 220

This type of network connects devices in a small area, like a classroom or home.

What is a Local Area Network (LAN)?

This type of network connects devices across cities, countries, or continents.

What is a Wide Area Network (WAN)?

This device connects your home network to the internet and often includes wireless access point (WAP).

What is a router (or wireless router)?

This early version of the internet, developed by the U.S. military, helped computers share information in the 1960s.

What is ARPANET?

This switching method breaks data into packets and sends them independently across the network.

What is packet switching?

This term describes the delay between sending and receiving data over a network.

What is latency?

This type of cable, often used in Ethernet networks, contains pairs of wires twisted together to reduce interference.

What is twisted pair cable?

This family of standards, labeled 802.11.xx, defines how wireless devices communicate over short distances—used in homes, schools, and coffee shops worldwide.

What is the Wi-Fi protocol?

This top layer of the internet model interacts directly with software applications like browsers and email.

What is the Application Layer?

The physical layer includes this wireless technology that uses radio waves to connect devices.

What is Wi-Fi?

This layer of the internet model decides how data is routed between networks.

What is the Network Layer?

This layer of the internet model ensures reliable delivery of data between devices.

What is the Transport Layer?

This layer converts digital data into signals that can travel through cables or air.

What is the physical layer?

This layer handles communication between devices on the same local network, using MAC addresses.

What is the data link layer?

The transport layer helps prevent this issue, where one device overwhelms another with too much data.

What is congestion?

This application layer protocol is used to send emails from one server to another.

What is SMTP (Simple Mail Transfer Protocol)?

This transport layer protocol is often used by application layer services that need reliable delivery, like email or web browsing.

What is TCP (Transmission Control Protocol)?

This protocol lets users retrieve email while keeping messages stored on the server.

What is IMAP (Internet Message Access Protocol)?

This protocol helps manage network devices like routers and switches from a central location.

What is SNMP (Simple Network Management Protocol)?

This application layer protocol is used to access websites in your browser.

Who is HTTP (Hypertext Transfer Protocol)?

This number is the default port of HTTP protocol.

What is port 80?

This protocol translates human-friendly website names into IP addresses.

What is DNS (Domain Name System)?

This protocol allows users to transfer files between computers over a network.

What is FTP (File Transfer Protocol)?

UDP is known for being this—making it faster but less dependable than TCP.

What is connectionless?

This protocol, used to translate domain names into IP addresses, often relies on UDP for speed.

What is DNS (Domain Name System)?

UDP is part of this layer in the internet model, supporting application layer protocols above it.

What is the transport layer?

The total length of header fields in a UDP datagram—covering source port, destination port, length, and checksum—is exactly this many bytes.

What is 8 bytes?

UDP stands for this three-word phrase used in networking.

What is User Datagram Protocol?

UDP is often used for this type of real-time media, like video or voice calls.

What is streaming?

Because UDP skips connection setup at the transport layer, application layer data can be sent immediately—saving this time delay caused by handshaking.

What is RTT (Round Trip Time)?

UDP headers are shorter than TCP headers because they skip this process.

What is connection setup or handshaking?