Comptia A+ ports

Question 1

FTP (connection based transfer protocol)

a. 143
b. 20
c. 23
d. 389

Answer 1

b. 20

Question 2

FTP Command Control

a. 23
b. 445
c. 21
d. 53

Answer 2

c. 21

Question 3

SSH (secure encrypted)

a. 22
b. 21
c. 427
d. 548

Answer 3

a. 22

Question 4

TelNet (not secure plain text)

a. 137-139
b. 3389
c. 21
d. 23

Answer 4

d. 23

Question 5

SMTP(Simple Mail Transfer Protocol) - outgoing

a. 25
b. 5900
c. 23
d. 445

Answer 5

a. 25

Question 6

DNS (Domain Name System)

a. 69
b. 53
c. 80
d. 67-68

Answer 6

b. 53

Question 7

DHCP (Dynamic Host Configuration Protocol)

a. 69
b. 137-139
c. 67-68
d. 548

Answer 7

c. 67-68

Question 8

TFTP (Trivial File Transfer Protocol)

a. 67-68
b. 443
c. 5900
d. 69

Answer 8

d. 69

Question 9

HTTP (Hypertext Transfer Protocol)

a. 80
b. 443
c. 69
d. 143

Answer 9

a. 80

Question 10

POP3 (Post Office Protocol version 3)

a. 25
b. 110
c. 143
d. 389

Answer 10

b. 110

Question 11

IMAP4 (Internet Message Access Protocol version 4)

a. 25
b. 110
c. 143
d. 443

Answer 11

c. 143

Question 12

SNMP (Simple Network Management Protocol) - allows network administrators to monitor and manage network devices such as routers, switches, servers, and printers

a. 67-68
b. 427
c. 445
d. 161-162

Answer 12

d. 161-162

Question 13

LDAP (Lightweight Directory Access Protocol) - managing directory information

a. 389
b. 443
c. 445
d. 3389

Answer 13

a. 389

Question 14

HTTPS (Hypertext Transfer Protocol Secure)

a. 427
b. 443
c. 80
d. 445

Answer 14

b. 443

Question 15

SMB/CIFS - SMB allows machines to share files and printers, thereby making them available for other machines to use. Samba software allows UNIX and Linux servers or NAS appliances to run SMB

a. 5900
b. 137-139
c. 445
d. 548

Answer 15

c. 445

Question 16

RDP

a. 5900
b. 69
c. 137-139
d. 3389

Answer 16

d. 3389

Question 17

VNC

a. 5900
b. 20
c. 427
d. 548

Answer 17

a. 5900

Question 18

SLC - Service Location Protocol (SLP) is a protocol or method of organizing and locating the resources (such as printers, disk drives, databases, e-mail directories, and schedulers) in a network. This is an alternative protocol to LDAP in newer networks

a. 443
b. 427
c. 445
d.80

Answer 18

b. 427

Question 19

NETBIOS - used on a modern network to support networking features for legacy versions of Windows

a. 68-69
b. 143
c. 137-139
d. 110

Answer 19

c. 137-139

Question 20

AFP - proprietary network protocol developed by Apple for file sharing and printer sharing services among Apple devices

a. 445
b. 53
c. 389
d. 548

Answer 20

d. 548