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Comptia A+ 1101 Core 1 > TCP & UDP Ports > Flashcards

TCP & UDP Ports Flashcards

1
Q

Which port enables the FTP’s Data Connection for sending file data?
UDP port 20
TCP port 20
UDP port 21
TCP port 21

A

TCP Port 20

File Transfer Protocol (FTP) data transfer

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2
Q

The FTP’s Control Connection for administering a session is established through:
TCP port 20
UDP port 20
TCP port 21
UDP port 21

A

TCP Port 21

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3
Q

SSH protocol runs on:
TCP port 21
UDP port 22
TCP port 20
TCP port 22

A

TCP port 22

Ports 20 and 21: File Transfer Protocol (FTP). FTP is for transferring files between a client and a server. Port 22: Secure Shell (SSH). SSH is one of many tunneling protocols that create secure network connections.

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4
Q

Which of the TCP ports listed below is used by Telnet?
20
21
22
23

A

23

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5
Q

TCP port 25 is used by:
SNMP
Telnet
FTP
SMTP

A

SMTP

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6
Q

Which of the following ports is assigned to the Domain Name System (DNS)?
53
67
110
389

A

53

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7
Q

Dynamic Host Configuration Protocol (DHCP) runs on: (Select 2 answers)
UDP port 65
UDP port 66
UDP port 67
UDP port 68
UDP port 69

A

UDP Port 67
UDP port 68

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8
Q

TCP port 80 is assigned to:
Hypertext Transfer Protocol (HTTP)
Hypertext Transfer Protocol over TLS/SSL (HTTPS)
Internet Message Access Protocol (IMAP)
Lightweight Directory Access Protocol (LDAP)

A

HTTP

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9
Q

Post Office Protocol v3 (POP3) uses:
TCP port 110
UDP port 123
TCP port 143
UDP port 161

A

TCP Port 110

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10
Q

Which of the port numbers listed below are reserved for NetBIOS services? (Select 3 answers)
135
136
137
138
139

A

port 137, 138, 139

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11
Q

Which of the following TCP ports is used by the Internet Message Access Protocol (IMAP)?
143
389
443
636

A

Port 143 IMAP

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12
Q

Which of the following TCP ports is used by the Internet Message Access Protocol (IMAP)?
143
389
443
636

A

Port 143 IMAP

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13
Q

An SNMP management station receives SNMP notifications from Agents on UDP port:
161
137
162
138

A

162

*** Notifications

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14
Q

An SNMP Agent receives requests on UDP port:
161
137
162
138

A

161
Request

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15
Q

TCP port 389 is the default network port for:
RDP
LDAP
SMB
LDAPS

A

LDAP

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16
Q

Which of the following ports is used by HTTPS?
TCP port 80
TCP port 443
UDP port 53
TCP port 143

A

TCP Port 443

17
Q

Which of the following protocols runs on TCP port 445?
HTTPS
SMB/CIFS
IMAP
H.323

A

SMB/CIFS

18
Q

A network technician uses Remote Desktop Protocol (RDP) client on their Windows OS to remotely troubleshoot a problem on another Windows machine. Which of the following ports needs to be opened for the built-in Windows RDP server to allow this type of network connection?
TCP port 1720
TCP port 636
TCP port 3389
TCP port 445

A

TCP Port 3389

Comptia A+ 1101 Core 1 (24 decks)

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