WGUl D334l Finall Examl (NEWl 2026/l
2027l Update)l Introductionl tol
Cryptographyl Reviewl |Questions &
Answers | Grade A| 100% Correct
(Verified Solutions)
QUESTION
Whichl ofl thel followingl BESTl describesl tunnelingl inl al securityl context?l A.l Securel pathl
throughl untrustedl networkl B.l Hidingl malwarel inl encryptedl filesl C.l Encryptingl webl
trafficl vial SSL/TLSl D.l Firewalll rulesl forl VPNs
Answer:
A.l Securel pathl throughl untrustedl networkl -l Tunnelingl encapsulatesl datal tol safelyl
traversel insecurel networks.
QUESTION
WPA3l introducesl whichl ofl thel followingl cryptographicl enhancementsl forl wirelessl
security?l A.l TKIPl B.l Pre-sharedl keysl onlyl C.l Simultaneousl Authenticationl ofl Equalsl
(SAE)l D.l DESl forl compatibility
Answer:
C.l SAEl -l WPA3l replacesl pre-sharedl keysl withl al securel mutuall authenticationl resistantl
tol offlinel attacks.
QUESTION
Whatl isl thel PRIMARYl advantagel ofl asymmetricl encryptionl overl symmetricl encryption?l
A.l Fasterl performancel B.l Smallerl keyl sizesl C.l Securel keyl exchangel withoutl al pre-
sharedl secretl D.l Reversiblel hashing
Answer:
C.l Securel keyl exchangel withoutl al pre-sharedl secretl -l Enablesl securel communicationl
overl insecurel channels.
QUESTION
,Whatl isl thel purposel ofl al digitall certificatel inl PKI?l A.l Encryptl privatel keysl B.l Storel
sessionl keysl C.l Bindl publicl keyl tol identityl D.l Signl hashes
Answer:
C.l Bindl publicl keyl tol identityl -l Certificatesl allowl othersl tol trustl communicationsl froml
thel entity.
QUESTION
Whichl ofl thel followingl isl MOSTl criticall tol maintainingl blockchainl consensus?l A.l Fastl
bandwidthl B.l Randoml numberl generationl C.l Proof-of-workl orl alternativel consensusl
mechanisml D.l Certificatel revocationl lists
Answer:
C.l Proof-of-workl orl alternativel consensusl mechanisml -l Ensuresl alll participantsl agreel onl
ledgerl state.
QUESTION
Whichl typel ofl cipherl isl morel vulnerablel tol frequencyl analysis?l A.l Transpositionl B.l
Asymmetricl C.l Substitutionl D.l Ellipticl curve
Answer:
C.l Substitutionl -l Retainsl letterl frequencyl patterns,l makingl frequencyl analysisl feasible.
QUESTION
Whichl ofl thel followingl usesl symmetricl encryptionl tol establishl al VPNl tunnel?l A.l SSLl
B.l IPsecl inl ESPl model C.l S/MIMEl D.l DNSSEC
Answer:
B.l IPsecl inl ESPl model -l ESPl usesl symmetricl encryptionl tol securel VPNl datal inl transit.
QUESTION
Whichl cipherl usesl al Polybiusl squarel andl transpositionl tol increasel complexity?l A.l
Playfairl B.l Bifidl C.l Caesarl D.l Vigenère
Answer:
B.l Bifidl -l Combinesl Polybiusl squarel andl transpositionl forl addedl complexityl overl
simplerl ciphers.
, QUESTION
Whichl cipherl requiresl pairsl ofl lettersl andl al 5x5l matrixl forl encryption?l A.l Bifidl B.l
Morsel C.l Playfairl D.l Raill Fence
Answer:
C.l Playfairl -l Usesl digraphsl (letterl pairs)l withl al 5x5l matrix.
QUESTION
Inl al homophonicl substitutionl cipher,l thel primaryl goall isl to:l A.l Createl polyalphabeticl B.l
Eliminatel keyl C.l Flattenl frequencyl D.l Shortenl ciphertext
Answer:
C.l Flattenl frequencyl -l Reducesl frequencyl analysisl byl mappingl onel letterl tol multiplel
symbols.
QUESTION
Whatl isl thel primaryl weaknessl ofl al Caesarl cipher?l A.l XORl B.l Nol keyl C.l Smalll
keyspacel D.l Non-reversible
Answer:
C.l Smalll keyspacel -l Onlyl 25l possiblel shifts,l easyl tol brute-force.
QUESTION
Al Vigenèrel cipherl differsl froml al Caesarl cipherl by:l A.l Keywordl shiftsl B.l Encryptingl
pairsl C.l Non-reversiblel D.l Binaryl math
Answer:
A.l Keywordl shiftsl -l Usesl al repeatingl keywordl tol varyl Caesarl shifts,l creatingl
polyalphabeticl encryption.
QUESTION
Whatl isl Morsel codel primarilyl considered?l A.l Symmetricl encryptionl B.l Substitutionl
cipherl C.l Datal encodingl D.l One-timel pad
Answer:
C.l Datal encodingl -l Morsel translatesl lettersl tol dotsl andl dashes,l notl encryption.
2027l Update)l Introductionl tol
Cryptographyl Reviewl |Questions &
Answers | Grade A| 100% Correct
(Verified Solutions)
QUESTION
Whichl ofl thel followingl BESTl describesl tunnelingl inl al securityl context?l A.l Securel pathl
throughl untrustedl networkl B.l Hidingl malwarel inl encryptedl filesl C.l Encryptingl webl
trafficl vial SSL/TLSl D.l Firewalll rulesl forl VPNs
Answer:
A.l Securel pathl throughl untrustedl networkl -l Tunnelingl encapsulatesl datal tol safelyl
traversel insecurel networks.
QUESTION
WPA3l introducesl whichl ofl thel followingl cryptographicl enhancementsl forl wirelessl
security?l A.l TKIPl B.l Pre-sharedl keysl onlyl C.l Simultaneousl Authenticationl ofl Equalsl
(SAE)l D.l DESl forl compatibility
Answer:
C.l SAEl -l WPA3l replacesl pre-sharedl keysl withl al securel mutuall authenticationl resistantl
tol offlinel attacks.
QUESTION
Whatl isl thel PRIMARYl advantagel ofl asymmetricl encryptionl overl symmetricl encryption?l
A.l Fasterl performancel B.l Smallerl keyl sizesl C.l Securel keyl exchangel withoutl al pre-
sharedl secretl D.l Reversiblel hashing
Answer:
C.l Securel keyl exchangel withoutl al pre-sharedl secretl -l Enablesl securel communicationl
overl insecurel channels.
QUESTION
,Whatl isl thel purposel ofl al digitall certificatel inl PKI?l A.l Encryptl privatel keysl B.l Storel
sessionl keysl C.l Bindl publicl keyl tol identityl D.l Signl hashes
Answer:
C.l Bindl publicl keyl tol identityl -l Certificatesl allowl othersl tol trustl communicationsl froml
thel entity.
QUESTION
Whichl ofl thel followingl isl MOSTl criticall tol maintainingl blockchainl consensus?l A.l Fastl
bandwidthl B.l Randoml numberl generationl C.l Proof-of-workl orl alternativel consensusl
mechanisml D.l Certificatel revocationl lists
Answer:
C.l Proof-of-workl orl alternativel consensusl mechanisml -l Ensuresl alll participantsl agreel onl
ledgerl state.
QUESTION
Whichl typel ofl cipherl isl morel vulnerablel tol frequencyl analysis?l A.l Transpositionl B.l
Asymmetricl C.l Substitutionl D.l Ellipticl curve
Answer:
C.l Substitutionl -l Retainsl letterl frequencyl patterns,l makingl frequencyl analysisl feasible.
QUESTION
Whichl ofl thel followingl usesl symmetricl encryptionl tol establishl al VPNl tunnel?l A.l SSLl
B.l IPsecl inl ESPl model C.l S/MIMEl D.l DNSSEC
Answer:
B.l IPsecl inl ESPl model -l ESPl usesl symmetricl encryptionl tol securel VPNl datal inl transit.
QUESTION
Whichl cipherl usesl al Polybiusl squarel andl transpositionl tol increasel complexity?l A.l
Playfairl B.l Bifidl C.l Caesarl D.l Vigenère
Answer:
B.l Bifidl -l Combinesl Polybiusl squarel andl transpositionl forl addedl complexityl overl
simplerl ciphers.
, QUESTION
Whichl cipherl requiresl pairsl ofl lettersl andl al 5x5l matrixl forl encryption?l A.l Bifidl B.l
Morsel C.l Playfairl D.l Raill Fence
Answer:
C.l Playfairl -l Usesl digraphsl (letterl pairs)l withl al 5x5l matrix.
QUESTION
Inl al homophonicl substitutionl cipher,l thel primaryl goall isl to:l A.l Createl polyalphabeticl B.l
Eliminatel keyl C.l Flattenl frequencyl D.l Shortenl ciphertext
Answer:
C.l Flattenl frequencyl -l Reducesl frequencyl analysisl byl mappingl onel letterl tol multiplel
symbols.
QUESTION
Whatl isl thel primaryl weaknessl ofl al Caesarl cipher?l A.l XORl B.l Nol keyl C.l Smalll
keyspacel D.l Non-reversible
Answer:
C.l Smalll keyspacel -l Onlyl 25l possiblel shifts,l easyl tol brute-force.
QUESTION
Al Vigenèrel cipherl differsl froml al Caesarl cipherl by:l A.l Keywordl shiftsl B.l Encryptingl
pairsl C.l Non-reversiblel D.l Binaryl math
Answer:
A.l Keywordl shiftsl -l Usesl al repeatingl keywordl tol varyl Caesarl shifts,l creatingl
polyalphabeticl encryption.
QUESTION
Whatl isl Morsel codel primarilyl considered?l A.l Symmetricl encryptionl B.l Substitutionl
cipherl C.l Datal encodingl D.l One-timel pad
Answer:
C.l Datal encodingl -l Morsel translatesl lettersl tol dotsl andl dashes,l notl encryption.
