WGUl D334l Prel Assessmentl (Latestl 2025/l 2026l Update)l Introductionl tol Cryptography|l Prepl Questionsl &l Answers|l Gradel A|l 100%l Correctl (Verifiedl Solutions)
Q:l Anl administratorl hasl configuredl al virtuall privatel networkl (VPN)l connectionl utilizingl IPsecl tunnell model withl Encapsulatingl Securityl Payloadl (ESP)l betweenl thel corporatel officel andl al remotel office.l Wherel canl thel packetsl bel inspectedl byl intrusionl detectionl systemsl (IDSs)l andl virusl scanners?
A.l Onlyl atl thel headquarters B.l Onlyl atl thel offsitel location C.l Atl thel headquartersl andl thel offsitel location D.l Betweenl thel headquartersl andl thel offsitel location
Answer:
C.l Atl thel headquartersl andl thel offsitel location
Q:l Whichl defaultl portl mustl bel openl forl thel IPsecl keyl exchangel tol bel successful?
A.l UDPl 162 B.l TCPl 389 C.l TCPl 465 D.l UDPl 500
Answer:
D.l UDPl 500
Q:l Whichl protocoll indicatesl thel virtuall privatel networkl (VPN)l isl usingl Authenticationl Headerl (AH)?
A.l 48 B.l 50 1 / 4
C.l 51 D.l 58
Answer:
C.l 51
Q:l Whichl cipherl usesl al gridl tol mapl lettersl intol numericl values?
A.l Bifid B.l SHA-1 C.l Caesar D.l Vigenère
Answer:
A.l Bifid
Q:l Whichl cipherl usesl al five-by-fivel matrixl withl nonrepeatingl characters?
A.l Playfair B.l Raill code C.l Pigpen D.l Vigenère
Answer:
A.l Playfair
Q:l Whatl doesl al frequencyl analysisl attackl tol breakl encryptionl involve?
A.l Analyzingl ciphertextl tol identifyl textl variationl andl comparingl thel textl tol standardl Englishl characters B.l Performingl anl exhaustivel searchl tol attemptl everyl possiblel mappingl orl key C.l Interferingl betweenl twol partiesl andl sometimesl interceptingl orl modifyingl datal inl thel communicationl stream D.l Identifyingl partl ofl thel ciphertextl andl thel correspondingl plaintext
Answer:
A.l Analyzingl ciphertextl tol identifyl textl variationl andl comparingl thel textl tol standardl Englishl characters
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Q:l Whichl techniquel shouldl al securityl analystl usel tol determinel thel keyl lengthl inl al Vigenèrel cipher?
A.l Frequencyl analysis B.l Brutel force C.l Kasiskil examination D.l Knownl plaintext
Answer:
C.l Kasiskil examination
Q:l Whatl definesl al primel number?
A.l Onlyl hasl factorsl ofl itselfl andl 1 B.l Onlyl hasl factorsl ofl itselfl andl 2 C.l Evenlyl divisiblel byl 3.14 D.l Evenlyl divisiblel byl 10
Answer:
A.l Onlyl hasl factorsl ofl itselfl andl 1
Q:l Whatl isl 29l modl 12?
A.l 0 B.l 3 C.l 5 D.l 7
Answer:
C.l 5
Q:l Whichl typel ofl cipherl isl ChaCha?
A.l Asymmetric B.l Block C.l Stream D.l Hash
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Answer:
C.l Stream
Q:l Whatl isl thel keyl sizel forl RC4l withl WEP?
A.l 40l bits B.l 128l bits C.l 256l bits D.l 512l bits
Answer:
A.l 40l bits
Q:l Whichl symmetricl encryptionl techniquel usesl al 56-bitl keyl sizel andl al 64-bitl blockl size?
A.l AES B.l DES C.l 3DES D.l IDEA
Answer:
B.l DES
Q:l Whichl wirelessl securityl standardl usesl al 128-bitl RC4l streaml cipherl forl encryptedl communications?
A.l WPA B.l WEP C.l VPN D.l GSM
Answer:
A.l WPA
Q:l Employeel Bl sendsl Employeel Al anl encryptedl message.l Whatl doesl Employeel Al usel tol decryptl thel messagel froml Employeel B?
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