1
Q
FTP
A
An Application-layer protocol used to transfer and manage files across a network
20 21
TCP
2
Q
SSH
A
A secure Application-layer protocol used to connect to a device across a network via a command-line interface
22
TCP
3
Q
Telnet
A
An unsecure Application-layer protocol used to connect to a device across a network via a command-line interface
23
TCP
4
Q
SMTP
A
An Application-layer protocol used to send e-mail over the Internet
25
TCP
5
Q
DNS
A
An Application-layer protocol that resolves computer and domain names to their IP addresses
53
UDP
6
Q
DHCP
A
An Application-layer protocol used to configure a host’s IP address settings dynamically
67 68
UDP
7
Q
TFTP
A
69
UDP
8
Q
HTTP
A
80
TCP
9
Q
POP3
A
110
TCP
10
Q
IMAP
A
143
TCP
11
Q
SNMP
A
161 162
UDP
12
Q
HTTPS
A
443
TCP
13
Q
SNB
A
445
TCP
14
Q
RDP
A
COSC 118
flashcards
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