CISSP Quick Ref

Question 1

Port for Net Bios

Answer 1

137 -139

Question 2

Port for FTP (control)

Answer 2

21

Question 3

Port for SFTP

Answer 3

22 - SSH as well since SFTP is SSH FTP

Question 4

Port for POP3

Answer 4

110

Question 5

Port for SMTP

Answer 5

25

Question 6

Port for DHCP

Answer 6

67

Question 7

Port for POP3

Answer 7

110

Question 8

Port for DNS

Answer 8

53 - know dns can be both udp/tcp

Question 9

Port for FTP (Data)

Answer 9

20

Question 10

Port for HTTP

Answer 10

80

Question 11

Port for HTTPS

Answer 11

443

Question 12

Port for IMAP

Answer 12

143

Question 13

Port for Kerberos

Answer 13

88

Question 14

Port for LDAP

Answer 14

389

Question 15

Port for POP3

Answer 15

110

Question 16

Port for Telnet

Answer 16

23

Question 17

Port for TFTP

Answer 17

69

Question 18

Ports for DHCP

Answer 18

67/68

Question 19

Finger

Answer 19

79

Question 20

Port for SunRTP

Answer 20

111

Question 21

Port for IMAP

Answer 21

143

Question 22

Port for SNMP

Answer 22

161 (Simple Network Management Protocol)

Question 23

Port SNMP (Trap)

Answer 23

162 - SNMP Network Message Protocol Trap is when no req for status sent from SNMP Manager to the Agent. The Agent just sends a Trap msg to alert Manager of an issue like over temperature

Question 24

Port for TACACS+

Answer 24

TCP 49

Question 25

Port for RADIUS

Answer 25

UDP 1812

Question 26

Ephemeral ports range

Answer 26

1024–65535. The Internet Assigned Numbers Authority (IANA) and RFC 6335 suggests the range 49152–65535 (215 + 214 to 216 − 1) for dynamic or private ports. In other words…Dynamic ports are in the range 49152 to 65535