Practice Test: Question Set - 03
1. ________ Data Encryption Standard (DES) operating modes can be used for large messages with the assurance that an error early in the encryption/decryption process won’t spoil results throughout the communication?
- (A) Cipher
Block Chaining (CBC)
- (B) Electronic
Codebook (ECB)
- (C) Cipher
Feedback (CFB)
- (D) Output
Feedback (OFB)
2. Differential Cryptanalysis can be mounted on
- (A) DES
encryption algorithm
- (B) AES
encryption algorithm
- (C) RSA
encryption algorithm
- (D) Deffie-Hellman
key exchange algorithm
3. On comparing AES with DES, which of the following functions from DES does not have an equivalent AES function?
- (A) f
function
- (B) Permutation
p
- (C) Swapping
of halves
- (D) XOR
of sub-key with function f
4. _______ platforms are used for safety and protection of information in the cloud.
- (A) Cloud
workload protection platforms
- (B) Cloud
security protocols
- (C) AWS
- (D) One
Drive
5. This helps in identifying the origin of information and authentic user. This referred to here as __________
- (A) Confidentiality
- (B) Integrity
- (C) Authenticity
- (D) Availability
6. This attack can be deployed by infusing a malicious code in a website’s comment section. What is “this” attack referred to here?
- (A) SQL
injection
- (B) HTML
Injection
- (C) Cross
Site Scripting (XSS)
- (D) Cross
Site Request Forgery (XSRF)
7. Use Caesar’s Cipher to decipher the following “HQFUBSWHG WHAW”
- (A) ABANDONED
LOCK
- (B) ENCRYPTED
TEXT
- (C) ABANDONED
TEXT
- (D) ENCRYPTED
LOCK
8. The principle of the encryption using a key is _________
- (A) The
key indicates which function is used for encryption. Thereby it is more
difficult to decrypt a intercepted message as the function is unknown.
- (B) The
key contains the secret function for encryption including parameters. Only a
password can activate the key.
- (C) All
functions are public, only the key is secret. It contains the parameters used
for the encryption resp. decryption.
- (D) The
key prevents the user of having to reinstall the software at each change in
technology or in the functions for encryption.
9. Compromising confidential information comes under ________
- (A) Bug
- (B) Threat
- (C) Vulnerability
- (D) Attack
10. When you use the word __________ it means you are protecting your data from getting disclosed.
- (A) Confidentiality
- (B) Integrity
- (C) Availability
- (D) Authenticity
11. The sub key length at each round of DES is__________
- (A) 32
- (B) 56
- (C) 48
- (D) 96
12. Related to information security, confidentiality is the opposite of which of the following?
- (A) Closure
- (B) Disclosure
- (C) Disaster
- (D) Disposal
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