CIST 1601 Final Exam Review Questions with Correct Answers Latest Update

CIST 1601 Final Exam Review Questions with Correct Answers Latest Update Weakest part of an informatoin security system - Answers literally just being on the internet. CIA - Answers Confidentially, Integrity and Availability Threat - Answers Anything that can exploit a vulnerability, intentionally or accidentally, and obtain, damage, or destroy an asset Vulnerability - Answers Weakness or gaps in a security program that can be exploited by threats Risk - Answers The potential for loss, damage, or destruction of an asset as a result of a threat exploiting a vulnerability Plaintext - Answers Encryption before decryption, a form easily read by humans Ciphertext - Answers Encrypted results of plaintext Encryption - Answers Act of transforming plaintext into ciphertext Decryption - Answers Act of transforming ciphertext into plaintext Cryptography - Answers an algorithm to encrypt or decrypt information Steganography - Answers Message itself may not be difficult to decode, but most people would not detect the messages presence Encryption - between - Answers you cannot decode message without knowing the proper key Hash - Answers number generated from string of text, its smaller than the text and is generated by formula in way that is extremely unlucky Keyspace - Answers total number of possbile value of keys in cryptographic algorithm or other measures like password Nonrepudiation - Answers method of guaranteeing transmission between parties with digital signature and encryption its one of fiver pillars of information assurance Symmetric Key - Answers one key to encrypt and decrypt Asymmetric Key - Answers two related keys: one encrypts and the other decrypts Disadvantage of Symmetric key ciphers - Answers all parties involved must exchange the key used to encrypt the data before they can decrypt it DES - Answers common for data encryption and a form of secret 3DES - Answers triple data encryption algorithm is a symmetric-key block cipher AES - Answers symmetric key algorithm, meaning same key is used for both encrypting and decrypting data No - Answers In an asymmetric key system with two keys, one public key and one private key, if a message is encrypted with the public key, can it be decrypted with the public key? no Digital Certificate - Answers is an electronic passport that allows a person to exchange information over internet using public key Physical - Answers Layer 1: defines electrical and physical device specifications and relationships between physical devices Data link - Answers Layer 2: provides the means to transfer data between devices on the same network segment. Most switches operate at this layer Network Layer - Answers Layer 3: provides means for delivering variable-length data between networks. Routers operate at this layer Transport Layer - Answers Layer 4: establishes reliable services and uses connection- or datagram-oriented packets. TCP and User Datagram Protocol (UDP) exist at this layer. Port numbers are important at this layer. Session Layer - Answers Layer 5: establishes, manages, and terminates connections locally and remotely Presentation Layer - Answers Layer 6: is responsible for the coding of data and includes file formats and character representations. ASCII, JPG, GIF, and many types of encryption are found at this layer.