IP Addressing
What is an IP address?
A unique identifier assigned to each device connected to a network.
What does TCP stand for?
Transmission Control Protocol.
Name one function of a switch.
To connect devices within a local area network (LAN) and forward data to the correct destination.
What is encryption?
The process of converting data into a coded format to prevent unauthorized access.
What does CCNA stand for?
Cisco Certified Network Associate
What are the two types of IP addresses?
IPv4 and IPv6.
What is the purpose of the DNS?
To translate domain names into IP addresses.
What is a firewall?
A network security device that monitors and controls incoming and outgoing network traffic based on security rules.
What is a VPN?
A Virtual Private Network, which creates a secure connection over a public network.
What is a network?
A group of interconnected computers that can communicate with each other.
How many bits are in an IPv4 address?
32 bits.
What is the difference between TCP and UDP?
TCP is connection-oriented and reliable, while UDP is connectionless and faster but less reliable.
What is the function of a modem?
To modulate and demodulate signals for data transmission over telephone lines or cable systems.
What does a DDoS attack do?
A Distributed Denial of Service attack overwhelms a network or service with traffic to disrupt its functionality.
Name one type of network topology.
Star, ring, bus, or mesh topology.
What is a subnet mask?
A mask used to determine what subnet an IP address belongs to.
Explain what HTTP is.
Hypertext Transfer Protocol, used for transmitting web pages over the Internet.
What is a hub?
A basic networking device used to connect multiple Ethernet devices in a LAN.
Explain the concept of a DMZ.
A demilitarized zone is a physical or logical subnetwork that separates an internal local area network from untrusted external networks.
What is the purpose of a router?
To forward data packets between computer networks.
Explain CIDR notation.
A method for allocating IP address space using a slash notation to indicate the number of bits used for the network part of the address.
What does DHCP do?
Dynamic Host Configuration Protocol, which automatically assigns IP addresses to devices on a network.
Describe a network interface card (NIC).
A hardware component that allows a device to connect to a network.
What is social engineering?
A manipulation technique that exploits human psychology to gain confidential information.
What is the OSI model?
A conceptual framework used to understand network interactions in seven layers.