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WorksheetsDomain 1 Lesson 5 FITB and Short Response: Encryption
Total questions: 52
Worksheet time: 1hrs 7mins
An encryption algorithm, or series of steps to encrypt data, uses a special value called an encryption key to scramble the data, resulting in (a) . [Types of Encryption]
Symmetric encryption, also known as (a) key encryption, uses the same key to encrypt and decrypt data. [Types of Encryption]
(a) is a property that guarantees the authenticity of a sender. [Types of Encryption]
A hashing function is called a(n) (a) function because it is very easy to calculate in one direction but extremely difficult to reverse. [Hashing]
A certificate is a(n) ______ ________e that includes a trusted identity and that identity's public key, which a trusted entity has validated. [Certificates and Public Key Infrastructure]
(a)
A public key infrastructure (PKI) enables numerous senders and recipients to exchange public keys and (a) certificates. [Certificates and Public Key Infrastructure]
After significant technological advances, it was discovered that the data encryption standard (DES) could be cracked in about (a) minutes. [Strong vs. Weak Encryption Algorithms]
Advanced Encryption Standard (AES) is based on the Rijndael block cipher, which uses keys as large as (a) bits. [Strong vs. Weak Encryption Algorithms]
The three most common data states are data at rest, data in transit, and data in (a) . [States of Data and Appropriate Encryption]
Data at (a) refers to data stored on storage media. [States of Data and Appropriate Encryption]
Windows _____ __________ is an effective tool for inspecting data at rest. [States of Data and Appropriate Encryption]
(a)
Data in (a) generally refers to data being transmitted over a network. [States of Data and Appropriate Encryption]
Data in use describes data that resides in the (a) of a device or computer. [States of Data and Appropriate Encryption]
The only way different computers or devices can talk to one another over (a) connections is to agree on the communication rules, also called protocols. [Protocols Using Encryption]
(a) is a popular program that transfers files over File Transfer Protocol (FTP). [Protocols Using Encryption]
Which type of encryption is commonly used to encrypt disk drives? [Types of Encryption]
Ciphertext encryption
Plaintext encryption
Symmetric encryption
Asymmetric encryption
Dynamic Encryption
Explain why symmetric encryption is better suited for storing data than transmitting data. [Types of Encryption]
Bob and Alice have each created a key pair consisting of a public and private key. Which key should Bob use to encrypt data before transmitting the data to Alice, ensuring that the data is protected and that only Alice can decrypt the data? [Types of Encryption]
Bob's private key
Bob’s public key
Alice’s private key
Alice’s public key
Bob's universal key
How could encryption key pairs be used to guarantee the authenticity of a sender? [Types of Encryption]
Plaintext is human-readable data that is (a) [Types of Encryption]
(a) is the study of encrypting and decrypting data.
A standard hashing algorithm takes an arbitrary-sized input and returns a(n) (a) -length string, [Hashing]
Hashing algorithms are well-suited for protecting data integrity. [Hashing]
True
False
Constructing two different inputs that produce that same output is exceedingly common. [Hashing]
True
False
The properties of hashing algorithms make them well-suited for protecting data (a) .[Hashing]
Alice calculates a message's hash value before sending it to Bob, and Bob receives the message and calculates a hash value using the same hash function. What assumptions can be made if the two hashes do not match? [Hashing]
It is standard practice to store (a) as hashes. [Hashing]
A trusted entity is known as a(n) ________ _________(CA) . [Certificates and Public Key Infrastructure]
(a)
Certificates enable the sharing of (a) keys and trust in the source of those keys. [Certificates and Public Key Infrastructure]
The Certificates Manager can be accessed by entering the (a) command into a Windows run dialog box. [Certificates and Public Key Infrastructure]
A digital signature is very similar to encrypting and decrypting data using (a) cryptography. [Certificates and Public Key Infrastructure]
In your own words, describe the purpose of a PKI. [Certificates and Public Key Infrastructure]
How is the strength of an algorithm measured? [Strong vs. Weak Encryption Algorithms]
In the 1970s, the (a) algorithm was adopted by the US government as its standard encryption algorithm. [Strong vs. Weak Encryption Algorithms]
(a) is the name of the state-of-the-art symmetric encryption algorithm based on the Rijndael block cipher? [Strong vs. Weak Encryption Algorithms]
Data that only needs to be protected for short periods does not need the strongest encryption algorithms. [Strong vs. Weak Encryption Algorithms]
True
False
Advanced Encryption Standard (AES) is expected to keep data secure for the foreseeable future. [Strong vs. Weak Encryption Algorithms]
True
False
The relative time it takes to crack an encryption algorithm is based on the attacker’s IP address and the state of technology at the time of the attack. [Strong vs. Weak Encryption Algorithms]
True
False
Data should be treated (a) at each stage of its lifecycle. [States of Data and Appropriate Encryption]
List four examples of storage media discussed in the video that are commonly used for data that is at rest. [States of Data and Appropriate Encryption]
According to the video, what are the two types of encryption typically best suited for data at rest? [States of Data and Appropriate Encryption]
According to the video, which two protocols are used to secure HTTP traffic? [States of Data and Appropriate Encryption]
Symmetric encryption algorithms are faster than asymmetric encryption algorithms. [States of Data and Appropriate Encryption]
True
False
Which Windows tool can be used to view data in transit? [States of Data and Appropriate Encryption]
Why is symmetric encryption the most common encryption type when working with data in use? [States of Data and Appropriate Encryption]
Computers and devices rely on communication (a) to communicate with one another over a network. [Protocols Using Encryption]
A protocol is a set of (a) that dictates how data is formatted and processed between nodes. [Protocols Using Encryption]
The most common control in use today for data in transit is (a) . [Protocols Using Encryption]
List three functionalities IP Security (IPsec) protocol provides for communication between two entities that were discussed in the video. [Protocols Using Encryption]
HTTP is an (a) protocol because the data travels in plaintext. [Protocols Using Encryption]
HTTPS is transmitted over one of two protocols. Select those two protocols. [Protocols Using Encryption]
Secure Sockets Layer (SSL)
Network Security Protocol (NSP)
Encryption Automated Security (EAS)
Transport Layer Security (TLS)
Super Secure Protocol (SSP)
Which protocol supports remote communication in a secure manner? [Protocols Using Encryption]
