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CREST CPSA FINAL EXAM 2025/2026 NEWEST ACTUAL
EXAM WITH COMPLETE QUESTIONS AND VERIFIED
ANSWERS |ALREADY GRADED A+|
What are the three components of IPsec and what do they
provide? -ANSWERS-1. Encapsulating Payload - data integrity,
encryption, authentication, and anti-replay.
2. Authentication Header - data integrity, authentication, and anti-
replay. (not encryption).
3. Internet Key Exchange - defines the IPsec SA.
What are two tools you can use to fingerprint VoIP? -ANSWERS-
Svmap, Nmap (with scripts)
What is SIP? -ANSWERS-Session Initiation Protocol. For
initiating, maintaining, terminating real-time sessions (including
voice, video, messaging).
Which two protocols does SIP incorporate elements from? -
ANSWERS-SMTP, HTTP
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What tools could you use to enumerate Wireless (802.11)
services? -ANSWERS-Windows - inSSIDer
Linux - Kismet
What is the chronological order of the wireless encryption
protocols? -ANSWERS-1. WEP
2. TKIP
3. WPA
4. WPA2
What did WEP use for encryption and authentication and why is it
bad? -ANSWERS-RC4. Keys can be cracked very quickly.
How did TKIP improve on WEP? -ANSWERS-Each data packet
was encrypted with a unique key.
How is WPA different from TKIP? -ANSWERS-It uses TKIP, but
keys are 256 bit.
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What are the two modes for WPA? -ANSWERS-Enterprise -
WPA-EAP
Personal - WPA-PSK
How did WPA2 improve on WPA? -ANSWERS-AES encryption
mainly.
What is EAP? -ANSWERS-Extensible Authentication Protocol -
authentication frameworks for WPA and WPA2.
What sort of OS does a Cisco router use? -ANSWERS-IOS -
Internet Operating System.
Why do Cisco routers use flash memory? -ANSWERS-It's more
reliable. ("non-volatile" - no power needed to retain power).
What are the two Cisco config files and what do they store? -
ANSWERS-Running-config - the current state of router
Startup-config - the files used to boot the router
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How do you load commands to a cisco router? -ANSWERS-Via
TFTP.
How would you identify domains/workgroups within a Windows
network? -ANSWERS-Using Nmap to query NetBIOS.
How would you identify key servers within a Windows domain? -
ANSWERS-Using netview.
What does the domain master browser do? -ANSWERS-
Propagates browse lists across each subnet in a workgroup.
What is SMB? -ANSWERS-Server Message Block - used for
sharing files/printers and things.
What port does SMB use? -ANSWERS-TCP 445
CREST CPSA FINAL EXAM 2025/2026 NEWEST ACTUAL
EXAM WITH COMPLETE QUESTIONS AND VERIFIED
ANSWERS |ALREADY GRADED A+|
What are the three components of IPsec and what do they
provide? -ANSWERS-1. Encapsulating Payload - data integrity,
encryption, authentication, and anti-replay.
2. Authentication Header - data integrity, authentication, and anti-
replay. (not encryption).
3. Internet Key Exchange - defines the IPsec SA.
What are two tools you can use to fingerprint VoIP? -ANSWERS-
Svmap, Nmap (with scripts)
What is SIP? -ANSWERS-Session Initiation Protocol. For
initiating, maintaining, terminating real-time sessions (including
voice, video, messaging).
Which two protocols does SIP incorporate elements from? -
ANSWERS-SMTP, HTTP
, Page |2
What tools could you use to enumerate Wireless (802.11)
services? -ANSWERS-Windows - inSSIDer
Linux - Kismet
What is the chronological order of the wireless encryption
protocols? -ANSWERS-1. WEP
2. TKIP
3. WPA
4. WPA2
What did WEP use for encryption and authentication and why is it
bad? -ANSWERS-RC4. Keys can be cracked very quickly.
How did TKIP improve on WEP? -ANSWERS-Each data packet
was encrypted with a unique key.
How is WPA different from TKIP? -ANSWERS-It uses TKIP, but
keys are 256 bit.
, Page |3
What are the two modes for WPA? -ANSWERS-Enterprise -
WPA-EAP
Personal - WPA-PSK
How did WPA2 improve on WPA? -ANSWERS-AES encryption
mainly.
What is EAP? -ANSWERS-Extensible Authentication Protocol -
authentication frameworks for WPA and WPA2.
What sort of OS does a Cisco router use? -ANSWERS-IOS -
Internet Operating System.
Why do Cisco routers use flash memory? -ANSWERS-It's more
reliable. ("non-volatile" - no power needed to retain power).
What are the two Cisco config files and what do they store? -
ANSWERS-Running-config - the current state of router
Startup-config - the files used to boot the router
, Page |4
How do you load commands to a cisco router? -ANSWERS-Via
TFTP.
How would you identify domains/workgroups within a Windows
network? -ANSWERS-Using Nmap to query NetBIOS.
How would you identify key servers within a Windows domain? -
ANSWERS-Using netview.
What does the domain master browser do? -ANSWERS-
Propagates browse lists across each subnet in a workgroup.
What is SMB? -ANSWERS-Server Message Block - used for
sharing files/printers and things.
What port does SMB use? -ANSWERS-TCP 445
