Exam (elaborations)
WGU C839 EXAM QUESTIONS AND ANSWERS 2024
- Course
- Institution
WGU C839 EXAM QUESTIONS AND ANSWERS 2024
[Show more]
Content preview
WGU C839 EXAM128/192/256 - ANSWERS-Which of the following are valid key sizes for AES
(choose three)?
3DES - ANSWERS-Which of the following algorithms uses three different keys to
encrypt the plain text?
Block Cipher - ANSWERS-AES is what type of cipher?
Asymmetric - ANSWERS-Which of the following is a type of encryption that has
two different keys. One key can encrypt the message and the other key can only
decrypt it?
RSA - ANSWERS-Which of the following is an asymmetric cipher?
The algorithm(s) needed to encrypt and decrypt a message - ANSWERS-A cipher is
defined as what
Symmetric systems - ANSWERS-AES is what type of system?
Joan's public key - ANSWERS-John is going to use RSA to encrypt a message to
Joan. What key should he use?
,They are faster - ANSWERS-What advantage do symmetric algorithms have over
asymmetric algorithms
Larger key sizes increase security - ANSWERS-Which of the following is generally
true about key sizes?
Hash - ANSWERS-A _____ is a function and is not reversible.
Diffie-Hellman (DH)/Menezes-Qu-Vanstone (MQV)/Elliptic-curve Diffie-Hellman
(ECDH) - ANSWERS-What are protocols for exchanging keys?
AES - ANSWERS-Which of the following would be the fastest: RSA/AES/DH/EC
DES - ANSWERS-Which of the following would be the weakest encryption
algorithm? RSA/AES/DES/EC
256 - ANSWERS-What is the largest key size that AES can use?
AES - ANSWERS-All of the following are key exchange protocols except for____
DH/AES/MQV/ECDH
RSA - ANSWERS-What encryption algorithm relies on the inability to factor large
prime numbers?
, Letter/word frequency is maintained - ANSWERS-Using substitution without
transposition leads to what weakness?
Skipjack - ANSWERS-What algorithm does the clipper chip use?
80 bit - ANSWERS-What size key does Skipjack use?
64 - ANSWERS-What size block does Skipjack use?
The message is divided into blocks and each block is encrypted separately. This is
the most basic mode for symmetric encryption. - ANSWERS-With Electronic
codebook (ECB) what happens
Symmetric - ANSWERS-Which encryption standard uses the same key to encrypt
and decrypt messages?
Skipjack - ANSWERS-Which algorithm is designated as a Type 2 product by the
National Security Agency (NSA)?
X.509 v3 - ANSWERS-What is the most commonly used format for certificates?
Certificate revocation list (CRL) - ANSWERS-What is referenced to determine if a
certificate has been revoked?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Teacher101. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now