Binary
What is a Bit? What do they consist of?
Bits are the smallest unit of data. It uses two values: 0 and 1.
What types of characters are included in ASCII?
It includes letters, numbers, and special symbols.
Computer Network
A network is a group of computers connected together in a way that allows information to be exchanged between the computers.
Bus topology
Each node is daisy-chained (connected one right after the other) along the same backbone, similar to Christmas lights. Information sent from a node travels along the backbone until it reaches its destination node.
What is a Byte? How many values can it represent?
A byte is a group of 8 bits. A byte can represent 256 different values.
What is the converted ASCII character and binary code for 83?
ASCII: S
Binary: 00100011
Client/Server Architecture
Client-server architecture (client/server) is a network architecture in which each computer or process on the network is either a client or a server.
Ring topology
Like a bus network, rings have the nodes daisy-chained. The difference is that the end of the network comes back around to the first node, creating a complete circuit.
What is Binary? Other than "bits" what are binary digits called?
Binary is the fundamental language of computers. These digits are called "bits" but are also called binary digits.
What system does it use for representing characters?
Standardized system is used for representing characters.
Local Area Network (LAN)
Local area network (LAN) technologies connect many devices that are relatively close to each other, usually in the same building. The library terminals that display book information would connect over a local area network.
Star topology
In a star network, each node is connected to a central device called a hub. The hub takes a signal that comes from any node and passes it along to all the other nodes in the network.
What are the steps to convert binary to decimal?
Multiply each digit by its place value.
Ex: Binary 1010
1x2^3=8, 0x2^2=0, 1x2^1=2, 0x2^0=0
Total: 8+0+2+0=10 decimal.
What does ASCII stand for?
ASCII: American Standard Code for Information Interchange.
3 types of cables and their meaning.
Twisted-pair cable: A type of cable that consists of two independently insulated wires twisted around one another.
Coaxial cables: A type of wire that consists of a center wire surrounded by insulation and then a grounded shield of braided wire.
Fiber optic cables: Fiber optics are thin glass or plastic fibers used to transmit data via light.
There are 7.
Repeatedly divide the decimal number by 2, while noting the remainder (0 or 1) at each step, then read the remainders from bottom to top.
How many bits does it use, and how many different characters do those bits represent?
It uses 7 bits to represent 128 different characters.
Wide Area Network (WAN)
Wide area network (WAN) technologies connect a smaller number of devices that can be many kilometers apart. For example, if two libraries at the opposite ends of a city wanted to share their book catalog information, they would most likely make use of a wide area network technology, which could be a dedicated line leased from the local telephone company, intended solely to carry their data.
Tree topology
A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable.