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CREST CPSA Latest Questions and Answers Rated 100% Correct
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Name all OSI layers <~~> Application, Presentation, Session, Transport, Network, Data Link, Physical. Name all TCP/IP layers <~~> Application, Transport, internet, Network Access. Name Four TCP head flags <~~> ACK, FIN, SYN, URG, PSH, RST Which layer does HTTP protocl r...

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  • September 21, 2024
  • 25
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • crest cpsa latest questions and answers rated 100
  • name all osi layers application presentati

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1 | P a g e | © copyright 2024/2025 | Grade A+




CREST CPSA Latest Questions and
Answers Rated 100% Correct
Name all OSI layers


✓ <~~> Application, Presentation, Session, Transport, Network, Data Link,

Physical.




Name all TCP/IP layers


✓ <~~> Application, Transport, internet, Network Access.




Name Four TCP head flags


✓ <~~> ACK, FIN, SYN, URG, PSH, RST




Which layer does HTTP protocl reside in the OSI model.


✓ <~~> Layer 7, Application.




Which layer does Ethernet reside in the OSI model.


✓ <~~> Layer 2, Data link.




Which Layer does IPv4 & IPv6 reside in TCP/IP model.




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


✓ <~~> Layer 4, transport.




RFC 1918 addresses


✓ <~~> 10.0.0.0 - 10.255.255.255 (10/8 prefix)

172.16.0.0 - 172.31.255.255 (172.16/12 prefix)

192.168.0.0 - 192.168.255.255 (192.168/16 prefix)




Name the well know, registered and dynamic port ranges.


✓ <~~> Well Known(0-1023), Registed(1024-49,151) & Dynamic(49,152-

65,535)




What is an ephemeral port?


✓ <~~> An ephemeral port is a short-lived transport protocol port for

Internet Protocol (IP) communications. Can be used by both TCP &

UDP.




What does IANA stand for?


✓ <~~> Internet Assigned Numbers Authority




Name 10 common ports and there protocols.




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


✓ <~~> FTP21, SSH22, DHCP67(C), DHCP68(S), NTP123, MYSQL3306,

RDP3389, HTTP80, HTTPS443, SMB445, KERBEROS88, CHARGEN19(UDP),

DNS53, TACAS49, WHOIS43, MSSQL1433, HIDDEN MSSQL2433.




Name five network types.


✓ <~~> LAN, WAN, MAN, VLAN, WLAN, PAN.




Name five network topologies


✓ <~~> Mesh, Ring, star, Tree, Bus.




Name five common ethernet and FDDI cable types.


✓ <~~> 100Base5, 10Base2, 10BaseT, 100Base-FL, 1000Base-T.




What is WIFI the alias for?


✓ <~~> IEEE 802.11




What does VLAN stand for?


✓ <~~> Virtual Local Area Network




How does VLAN work?




Master01 | September, 2024/2025 | Latest update

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