Exponent
A number that goes in the upper right corner, such as x².
Prime Number
A number that can only be divided by 1 or by the number itself, not including 1
Composite number
A natural number that has divisors other than 1 and itself.
Define(programming)
Determining the function(programming).
Return value
The result obtained from the execution of a function
DNCL
A standard language for writing procedures for the Center Test. Used for Common Test questions dealing with the scope of programming.
Data
An individual fact, statistic, or piece of information.
Server
A computer or software program on a network that is responsible for returning information and processing results to other computers at their direction.
ISP(Internet Service Provider)
A connection between a computer or other terminal and a line that enables connection to the Internet.
Consistency
Consistency from beginning to end.
Independence
Not controlled or influenced by others.
Availability
Ability to operate continuously.
Confidentiality
Information must be controlled so that only authorized personnel can see it.
LAN(local area network)
Abbreviation for local area network. A network that can be connected within a certain limited area.
Key
A short code that provides a calculation procedure for data encryption.
Public key cryptography
A cryptographic scheme that uses separate keys for encryption and decryption and allows the key for encryption to be made public. (The sender encrypts with a public key distributed by the receiver and decrypts with a private key held only by the receiver.)
Prime factor
A prime number that is the divisor of a natural number in mathematics.
Algorithm
A procedure or method of calculation for solving a problem.
sum Function
A function that adds up specified values, such as numbers in a list. (mainly in Excel, python)
Digital Signature
A procedure of general public key cryptography used in reverse to verify the sender's identity. The sender encrypts with a private key and the receiver decrypts with a public key provided by the sender. (e.g., e-mail)
Fundamental
The root of a thing.
developmental
The development and expansion of a thing.
Relatively
A relationship based on comparison with something else. A similar expression is comparative.
Enormous
A very large number, a large quantity.
Diverse
A variety of different things.
Artificial
Not by nature, but by human intervention.
Domain Name
A kind of Internet address used to identify individual computers and other devices connected to the Internet and to designate where they are connected. They are never duplicated and are converted to IP addresses by name resolution.
Host Name
While a domain name is an address on the Internet, a host name is like a name that identifies an individual device. Although similar to domain names, there are technical differences. They are also converted to IP addresses by name resolution.
DNS Servers
A server that translates IP addresses into domain names and host names.
Root Name Server
The server that manages the most important information in the DNS servers. There are only 13 of them in the world, and they are like the head of a large number of DNS servers.
Encryption
A mechanism to convert stored data into completely different data in order to make it unrecognizable from the outside.
