CompTIA A+ 1101 Port Numbers

Question 1

What is udp/137?
1
Dns (domain Name System)
2
Telnet (telecommunication network)
3
Ssh (secure shell)
4
NBNAME (NetBIOS Name Service)

Answer 1

4
NBNAME (NetBIOS Name Service)

Question 2

What is tcp/25?
Choose matching term

1
Http (hypertext transfer protocol)
2
SMTP (Simple Mail Transfer Protocol)
3
Ssh (secure shell)
4
Ldap (lightweight Directory Access Protocol)

Answer 2

2
SMTP (Simple Mail Transfer Protocol)

Question 3

Choose matching term
- temporary port numbers
- determined in real-time by the client
- ports 1024 through 65535

1
Ephemeral Ports
2
POP3 (Post Office Protocol version 3)
3
IMAP4 (Internet Message Access Protocol, version 4)
4
SNMP (Simple Network Management Protocol)

Answer 3

1
Ephemeral Ports

Question 4

Choose matching term
-permanent port numbers
- ports 0 through 1023

1
SMTP (Simple Mail Transfer Protocol)
2
Non-Ephemeral Ports
3
Ephemeral Ports
4
SMB (Server Message Block) & CIFS (Common Internet File System)

Answer 4

2
Non-Ephemeral Ports

Question 5

Choose matching term
udp/161 (queries), udp/162 (traps)

1
SNMP (Simple Network Management Protocol)
2
Http (hypertext transfer protocol)
3
Dhcp (dynamic Host Configuration Protocol)
4
Rdp (remote desktop protocol)

Answer 5

1
SNMP (Simple Network Management Protocol)

Question 6

Choose Matching term
cp/20 (active data mode), tcp/21 (control)

1
Http (hypertext Transfer Protocol)
2
Snmp (simple network management protocol)
3
Ssh (secure shell)
4
FTP (File Transfer Protocol)

Answer 6

4
FTP (File Transfer Protocol)

Question 7

tcp/22
Choose matching term

1
Rdp (remote desktop protocol)
2
SSH (Secure Shell)
3
Ldap (lightweight directory access protocol)
4
Ftp (file transfer protocol)

Answer 7

2
SSH (Secure Shell)

Question 8

tcp/23
Choose matching term

1
Dns (domain name system)
2
Telnet (Telecommunication Network)
3
Ssh (secure Shell)
4
Ftp (file transfer protocol)

Answer 8

2
Telnet (Telecommunication Network)

Question 9

tcp/25
Choose matching term

1
Http (hypertext transfer protocol)
2
Ssh (secure shell)
3
Ldap (lightweight Directory Access Protocol)
4
SMTP (Simple Mail Transfer Protocol)

Answer 9

4
SMTP (Simple Mail Transfer Protocol)

Question 10

udp/53
Choose matching term

1
DNS (Domain Name System)
2
Http (hypertext Transfer Protocol)
3
Rdp (remote Desktop Protocol)
4
Ftp (file Transfer Protocol)

Answer 10

1
DNS (Domain Name System)

Question 11

udp/67, udp/68
Choose matching term

1
Rip (routing information protocol)
2
Ntp (network time protocol)
3
DHCP (Dynamic Host Configuration Protocol)
4
Dns (domain name system)

Answer 11

3
DHCP (Dynamic Host Configuration Protocol)

Question 12

tcp/80
Choose matching term

1
Ftp (file Transfer Protocol)
2
Rdp (remote Desktop Protocol)
3
HTTP (Hypertext Transfer Protocol)
4
Dns (domain Name System)

Answer 12

3
HTTP (Hypertext Transfer Protocol)

Question 13

tcp/443
Choose matching term

1
HTTPS (Hypertext Transfer Protocol Secure)
2
Imap (internet Message Access Protocol)
3
Sftp (secure File Transfer Protocol)
4
Telnet (teletype network)

Answer 13

1
HTTPS (Hypertext Transfer Protocol Secure)

Question 14

tcp/110
Choose matching term

1
POP3 (Post Office Protocol version 3)
2
Http (hypertext transfer protocol)
3
Imap (internet message access protocol)
4
Smtp (simple mail transfer protocol)

Answer 14

1
POP3 (Post Office Protocol version 3)

Question 15

tcp/143
Choose matching term

1
Smtp (simple mail transfer protocol)
2
IMAP4 (Internet Message Access Protocol, version 4)
3
Ftp (file transfer protocol)
4
Pop3 (post office protocol version 3)

Answer 15

IMAP4 (Internet Message Access Protocol, version 4)

Question 16

What is tcp/445

Answer 16

SMB (Server Message Block) & CIFS (Common Internet File System)

Question 17

What is tcp/389

Answer 17

LDAP (Lightweight Directory Access Protocol)

Question 18

What is tcp/3389

Answer 18

RDP (Remote Desktop Protocol)

Question 19

What is udp/139

Answer 19

NBSESSION (NetBIOS Session Service)