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CompTIA A+ 2019 > Core 1: TCP & UDP Ports > Flashcards

Core 1: TCP & UDP Ports Flashcards

1
Q

Which port enables FTP’s Data Connection to send file data?

  • UDP port 20
  • TCP port 20
  • UDP port 21
  • TCP port 21
A

TCP port 20

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2
Q

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

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4
Q

Which of the following TCP ports does Telnet use?

  • 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 UDP ports is assigned to DNS?

  • 53
  • 67
  • 110
  • 389
A

53

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7
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

Hypertext Transfer Protocol (HTTP)

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8
Q

POP3 uses:

  • TCP port 110
  • UDP port 123
  • TCP port 143
  • UDP port 161
A

TCP port 110

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9
Q

Which of the following TCP port numbers is assigned to IMAP?

  • 143
  • 389
  • 443
  • 636
A

143

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10
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

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11
Q

A network technician wishes to use an 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

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12
Q

Which of the following port numbers are reserved for NetBIOS services? (Select 3 answers)

  • 136
  • 161
  • 137
  • 162
  • 138
  • 139
A

137
138
139

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13
Q

Port 445 is used by: (Select 2 answers)

  • RDP
  • SMB
  • CIFS
  • HTTPS
  • IMAP
A
  • SMB

- CIFS

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14
Q

Which port number is used by SLP?

  • 143
  • 427
  • 548
  • 443
A

427

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15
Q

AFP runs by default on TCP port:

  • 427
  • 443
  • 445
  • 548
A

548

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16
Q

DHCP runs on: (Select 2 answers)

  • UDP port 63
  • UDP port 65
  • UDP port 67
  • UDP port 68
  • UDP port 69
A
  • UDP port 67

- UDP port 68

17
Q

TCP port 389 is the default network port for:

  • RDP
  • LDAP
  • SMB
  • LDAPS
A

LDAP

18
Q

An SNMP Agent receives requests on UDP port:

  • 161
  • 138
  • 162
  • 139
A

161

19
Q

An SNMP management station receives SNMP notifications on which of the following UDP ports?

  • 161
  • 137
  • 162
  • 138
A

162

CompTIA A+ 2019 (40 decks)

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