CREST CPSA Test
Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,TCP - Answer: Transmission Control Protocol
UDP - Answer: User Datagram Protocol
Port 21 - Answer: FTP
FTP - Answer: File Transfer Protocol
Port 22 - Answer: SSH
SSH - Answer: Secure Shell
Port 23 - Answer: Telnet
Port 25 - Answer: SMTP
SMTP - Answer: Simple Mail Transfer Protocol
Port 49 - Answer: TACACS
TACACS - Answer: Terminal Access Controller Access Control System
Port 53 - Answer: DNS
DNS - Answer: Domain Name System
Port 67 (UDP) - Answer: DHCP (Server)
Port 68 (UDP) - Answer: DHCP (Client)
,DHCP - Answer: Dynamic Host Configuration Protocol
Port 69 (UDP) - Answer: TFTP
TFTP - Answer: Trivial File Transfer Protocol
Port 80 - Answer: HTTP
HTTP - Answer: Hypertext Transfer Protocol
Port 88 - Answer: Kerberos
Kerberos - Answer: A computer network authentication protocol that works on the basis of tickets to
allow nodes communicating over a non-secure network to prove their identity to one another in a
secure manner
Port 110 - Answer: POP3
POP3 - Answer: Post Office Protocol version 3
Port 111 - Answer: RPC
RPC - Answer: Remote Procedure Call
Port 123 - Answer: NTP
NTP - Answer: Network Time Protocol
, Port 135 - Answer: Windows RPC (EPM)
Port 593 - Answer: RPC over HTTPS
Port 445 - Answer: SMB
SMB - Answer: Server Message Block
Port 137 (UDP) - Answer: NetBIOS (name services)
Port 138 (UDP) - Answer: NetBIOS (datagram services)
Port 139 - Answer: NetBIOS (session services)
NetBIOS - Answer: Network Basic Input/Output System
Port 143 - Answer: IMAP
IMAP - Answer: Internet Message Access Protocol
Port 161 (UDP) - Answer: SNMP
SNMP - Answer: Simple Network Management Protocol
Port 179 - Answer: BGP
BGP - Answer: Border Gateway Protocol
Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,TCP - Answer: Transmission Control Protocol
UDP - Answer: User Datagram Protocol
Port 21 - Answer: FTP
FTP - Answer: File Transfer Protocol
Port 22 - Answer: SSH
SSH - Answer: Secure Shell
Port 23 - Answer: Telnet
Port 25 - Answer: SMTP
SMTP - Answer: Simple Mail Transfer Protocol
Port 49 - Answer: TACACS
TACACS - Answer: Terminal Access Controller Access Control System
Port 53 - Answer: DNS
DNS - Answer: Domain Name System
Port 67 (UDP) - Answer: DHCP (Server)
Port 68 (UDP) - Answer: DHCP (Client)
,DHCP - Answer: Dynamic Host Configuration Protocol
Port 69 (UDP) - Answer: TFTP
TFTP - Answer: Trivial File Transfer Protocol
Port 80 - Answer: HTTP
HTTP - Answer: Hypertext Transfer Protocol
Port 88 - Answer: Kerberos
Kerberos - Answer: A computer network authentication protocol that works on the basis of tickets to
allow nodes communicating over a non-secure network to prove their identity to one another in a
secure manner
Port 110 - Answer: POP3
POP3 - Answer: Post Office Protocol version 3
Port 111 - Answer: RPC
RPC - Answer: Remote Procedure Call
Port 123 - Answer: NTP
NTP - Answer: Network Time Protocol
, Port 135 - Answer: Windows RPC (EPM)
Port 593 - Answer: RPC over HTTPS
Port 445 - Answer: SMB
SMB - Answer: Server Message Block
Port 137 (UDP) - Answer: NetBIOS (name services)
Port 138 (UDP) - Answer: NetBIOS (datagram services)
Port 139 - Answer: NetBIOS (session services)
NetBIOS - Answer: Network Basic Input/Output System
Port 143 - Answer: IMAP
IMAP - Answer: Internet Message Access Protocol
Port 161 (UDP) - Answer: SNMP
SNMP - Answer: Simple Network Management Protocol
Port 179 - Answer: BGP
BGP - Answer: Border Gateway Protocol
