CREST CPSA Exam Questions and Answers |Latest Version 2025/2026 |Guaranteed Success

CREST CPSA Exam Questions and Answers |Latest Version 2025/2026 |Guaranteed Success Name all OSI layers - answer-Application, Presentation, Session, Transport, Network, Data Link, Physical. Name all TCP/IP layers - answer-Application, Transport, internet, Network Access. Name Four TCP head flags - answer-ACK, FIN, SYN, URG, PSH, RST Which layer does HTTP protocl reside in the OSI model. - answer-Layer 7, Application. Which layer does Ethernet reside in the OSI model. - answer-Layer 2, Data link. Which Layer does IPv4 & IPv6 reside in TCP/IP model. - answer-Layer 4, transport. RFC 1918 addresses - answer-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. - answer-Well Known(0-1023), Registed(1024- 49,151) & Dynamic(49,152-65,535) What is an ephemeral port? - answer-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? - answer-Internet Assigned Numbers AuthorityName 10 common ports and there protocols. - answer-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. - answer-LAN, WAN, MAN, VLAN, WLAN, PAN. Name five network topologies - answer-Mesh, Ring, star, Tree, Bus. Name five common ethernet and FDDI cable types. - answer-100Base5, 10Base2, 10BaseT, 100Base-FL, 1000Base-T. What is WIFI the alias for? - answer-IEEE 802.11