Network Basics
The smallest type of network, often connecting Bluetooth devices or smartphones.
What is a PAN (Personal Area Network)?
The OSI model has this many layers.
What is 7?
A small business connecting all computers to a central switch uses this topology.
What is a Star topology?
This device forwards traffic based on MAC addresses.
What is a Switch?
The protocol used to test connectivity between two devices using echo requests and replies.
What is ICMP (ping)?
This protocol automatically assigns IP addresses to hosts.
What is DHCP?
The layer responsible for routing packets between networks.
What is the Network layer?
This network spans across cities or regions, connecting multiple LANs.
What is a WAN (Wide Area Network)?
This hardware component is required in every device to connect to a network.
What is a NIC (Network Interface Card)?
The default port for secure web traffic (HTTPS).
What is port 443?
The term for dividing a network into smaller, more manageable parts using subnet masks.
What is Subnetting?
The layer that establishes, maintains, and terminates communications.
What is the Session layer?
This topology provides high redundancy because every device connects to every other device.
What is a Mesh topology?
This device connects different networks together using IP addressing.
What is a Router?
The protocol that securely transfers files using encryption.
What is SFTP (Secure File Transfer Protocol)?
he process of converting human-readable names into IP addresses.
What is DNS resolution?
Data at the Data Link layer is known as this.
What are Frames?
The most common wireless network standard used today, found in homes and businesses.
What is IEEE 802.11?
A device used to extend the range of a network.
What is a Repeater or Range Extender?
This protocol translates private IP addresses into public ones for Internet access.
What is NAT (Network Address Translation)?
This layer of the TCP/IP model is responsible for reliable end-to-end communication.
What is the Transport layer?
In the TCP/IP model, this layer corresponds to both the OSI Session and Presentation layers.
What is the Application layer?
The main disadvantage of a Bus topology.
What is that a single cable failure can bring down the entire network?
A networking device that protects a network by filtering traffic based on rules.
What is a Firewall?
The protocol that ensures reliable delivery of data packets across a network.
What is TCP (Transmission Control Protocol)?