Study guides, Class notes & Summaries

Original, unencrypted information is referred to as ____. A text B plaintext C cleantext D ciphertext B Which of the following is NOT an asymmetric system? A PGP B RSA C SSL D DES D In order for User A to send User B an encrypted message that only User B can read, User A must encrypt message with which of the following keys? A User A's public key B User A's private key C User B's public key D User B's private key C

Which encryption standard uses the same key to encrypt and decrypt messages? - Answer Symmetric Key Encryption Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? - Answer SKIPJACK What is the most commonly used format for certificates? - Answer X.509 v3 *Version 3* What is referenced to determine if a certificate has been revoked? - Answer Certificate Revocation List *(CRL)* What needs to be installed on *end users' computers* to allow t...

1. A business wants to use keys issued by a trusted third party to demonstrate to potential customers that it is a legitimate organization. Which key is used to sign the certificate issued to the business? Private key of the root CA Public key of the root CA Private key of the company Public key of the company - Answer Private key of the root CA 2. A business wants to use keys issued by a trusted third party to demonstrate it is a legitimate organization to potential customers. Whi...

An individual has taxable income of $60,000. The first $20,000 is taxed at 20%, the next $20,000 is taxed at 20%, and all income above $40,000 is taxed at 20%.Which tax structure is being applied to the individual's taxable income? Base Regressive Progressive Proportional - Answer Proportional Which federal income tax structure imposes an increasing marginal tax rate as the tax base increases? Regressive tax Incremental tax Progressive tax Proportional tax - Answer Progressive ...

ICD-0 - Answer International Classification of Diseases for Oncology ICD-10 Structure - Answer 3-7 numbers, begins with letter, decimal point at position 3 - A56.7241 What number does the section for ICD-10-PCS for osteopathic start with? - Answer 7 Structure of the ICD-10-PCS - Answer 7 alphanumeric characters, Z is place holder CPT Structure - Answer 5 numerical characters - 12345 what is another name for HCPCS-1? - Answer CPT (exam will refer to HCPCS-1 which is CPT...

DES - Answer 64 Bit Block - 56 Bit Key - 16 Rounds AES - Answer 128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds BlowFish - Answer 64 Bit Block - 32 thru 448 Bit Key - 16 Rounds TwoFish - Answer 128 Bit Block - 1 thru 256 Bit Key - 16 Rounds Serpent - Answer 128 Bit Block 128, 192, 256 Bit Key - 32 Rounds SkipJack - Answer 64 Bit Block - 80 Bit Key - 32 Rounds IDEA - Answer 64 Bit Block - 128 Bit Key - 8.5 Rounds Symmetric Block Ciphers - Answer DES ...

128 - Answer The hash value in bits for MD5 is ____. A. 128 B. 160 C. 256 variable; fixed - Answer Hashing involves taking a _____ length input and producing a _____ length output (message digest). A. fixed; fixed B. variable; fixed C. fixed; variable 160 - Answer The hash value in bits for SHA-1 is ____. A. 128 B. 160 C. 256 128 - Answer The hash value in bits for MD4 is ____. A. 128 B. 160 C. 256 Transport - Answer IPSec ______ mode involves "end-to-end" enc...

Which cybersecurity term is defined as the potential for an attack on a resource? A Impact B Vulnerability C Risk D Threat - Answer D Which security type deliberately exposes a system's vulnerabilities or resources to an attacker? A Intrusion detection B Firewalls C Honeypots D Intrusion prevention - Answer C Which tool can be used to map devices on a network, along with their operating system types and versions? A Packet sniffer B Packet filter C Port scanner D Stat...

What type of encryption uses different keys to encrypt and decrypt the message? A Symmetric B Private key C Secure D Asymmetric - Answer D The most widely used asymmetric encryption algorithm is what? A RSA B Vigenere C DES D Caesar Cipher - Answer A Original, unencrypted information is referred to as ____. A text B plaintext C cleantext D ciphertext - Answer B Which of the following is NOT an asymmetric system? A PGP

CrypTool - Answer Software which allows encryption of text using historic algorithms The Enigma Machine - Answer In World War II the Germans made use of an electro-mechanical rotor based cipher Known as The Enigma Machine. Allied cipher machines used in WWII included the British TypeX and the American SIGABA. The ADFGVX Cipher - Answer invented by Colonel Fritz Nebel in 1918. The key for this algorithm is a six-by-six square of letters, used to encode a 36-letter alphabet. The...

What is the block and key size for Blowfish - 64 bit block - 32-448 bit key What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? Steganography What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? Steganography Which block cipher below uses a block size of 128 bits and key sizes up to 256 bits? TwoFish Symmetric encryption is expressed mathematically...