IP and Protocols
An address that identifies the network and host address assigned to a device.
What is Internet Protocol Address (IP address)?
A multi-port bridge that performs filtering based on MAC addresses and provides additional features not found in a bridge.
What is a Switch?
A description of how computers and links are connected on a network (physical topology) and the flow of data (logical topology).
What is Network topology?
Sends an ICMP echo request/reply packet to a remote host. A response from the remote host indicates that both hosts are correctly configured and a connection exists between them.
What is Ping?
"Merry Christmas you filthy animal!"
Kevin McCallister, "Home Alone 2: Lost in New York"
The portion of the IP address that identifies the network the device is assigned to.
What is Subnet Address?
A device that connects two or more network segments or subnets.
What is a Router?
A network topology where all nodes in the network are connected to a cable (called a bus).
What is Bus topology?
Connects each wire to the same pin on each connector (pin 1 to pin 1, pin 2 to pin 2, etc.).
What is Straight-through cable?
"Happy Birthday!"
Frosty the Snowman, "Frosty the Snowman"
One of the main internet protocols. It allows computing devices and application devices to exchange messages over a network.
What is Transmission Control Protocol (TCP)?
A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
What is a Firewall?
A network topology in which every node is connected to two other nodes in a closed circular organization where data travels through every node.
What is Ring Topology?
A unit of data that is ready to be sent on the network medium.
What is a Frame?
"Sometimes the most real things in the world are the things we can't see."
The Conductor, "The Polar Express"
A conceptual model and set of communications protocols used on the internet and similar computer networks. The foundational protocols in this suite are Transmission Control Protocol (TCP) and Internet Protocol (IP).
What is Internet Protocol Suite?
A hub for a wireless network. As with a hub, any message sent to any wireless host connected to it can be received by all other wireless hosts.
What is a Wireless Access Point (AP)?
A network topology in which every node in the network is connected to a central node (either a hub or a switch) in a spoke-and-hub organization.
What is Star Topology?
A protocol used to centrally manage the distribution of IP addresses within a network.
What is DHCP?
"6:30, dinner with me, can't cancel that again. 7:00, wrestle with my self-loathing... I'm booked!"
The Grinch, "How the Grinch Stole Christmas", 2000.
A reference model for how applications communicate over a network without regard to its underlying internal structure and technology.
What is Open Systems Interconnection (OSI) Model?
A feature that allows a device to automatically assign itself an IP address on the 169.254.0.0 network when a DHCP server or manual configuration is unavailable.
What is Automatic Private IP Addressing (APIPA)?
A network topology in which every node is connected to every other node in the network to create redundancy.
What is Mesh Topology?
A type of null-modem cable that is used to connect a computer terminal to a router's console port. Might also have an RJ45 connector on both ends, requiring an adapter to convert from the RJ45 connector to the serial cable.
What is Rollover Cable?
"Bumbles bounce!"
Yukon Cornelius, "Rudolph the Red-Nosed Reindeer"