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A+ Key Topic > 2.1 Compare and contrast TCP and UDP ports, protocols, and their purposes > Flashcards

2.1 Compare and contrast TCP and UDP ports, protocols, and their purposes Flashcards

1
Q

Computers use port numbers to:

A

identify protocols and keep the different processes sorted out

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2
Q

The protocol HTTP does what?

A

Makes the connection to the web server

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3
Q

How does the protocol HTTP work?

A

It selects an unused port on the computer (known as an outbound port) to send and receive data to and from a website

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4
Q

What is an inbound port?

A

It is a port used by the websites web server that is open at all times, ready to accept sessions

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5
Q

Transmission Control Protocol (TCP) sessions are known as:

A

connection-oriented sessions (this means that every packet that is sent is checked for delivery)

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6
Q

User Datagram Protocol (UDP) sessions are known as:

A

connectionless sessions (this means the messages are sent without an expectation of communication from the receiver.

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7
Q

UDP is used in:

A

streaming media sessions, such as Voice over IP (VoIP) and gaming

and for protocols that use a simple query and response, such as DNS

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8
Q

When is UDP better than TCP?

A

for time-sensitive information

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9
Q

When is TCP more beneficial than UDP?

A

When reliability is important

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10
Q

Port Number(s), Port Type

FTP

A

20 & 21, TCP/UDP

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11
Q

Port Number(s), Port Type

SSH

A

22, TCP/UDP

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12
Q

Port Number(s), Port Type

Telnet

A

23, TCP/UDP

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13
Q

Port Number(s), Port Type

SMTP

A

25, TCP/UDP

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14
Q

Port Number(s), Port Type

DNS

A

53, TCP/UDP

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15
Q

Port Number(s), Port Type

HTTP

A

80, TCP/UDP

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16
Q

Port Number(s), Port Type

POP3

A

110, TCP/UDP

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17
Q

Port Number(s), Port Type

IMAP

A

143, TCP

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18
Q

Port Number(s), Port Type

HTTPS

A

443, TCP/UDP

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19
Q

Port Number(s), Port Type

RDP

A

3389, TCP/UDP

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20
Q

Port Number(s), Port Type

NetBIOS/NetBT

A

137-139, TCP/UDP

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21
Q

Port Number(s), Port Type

SMB/CIFS

A

445, TCP

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22
Q

Port Number(s), Port Type

SLP

A

427, TCP/UDP

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23
Q

Port Number(s), Port Type

AFP

A

548, TCP

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24
Q

Port Number(s), Port Type

DHCP

A

67/68, UDP

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25
Port Number(s), Port Type LDAP
389, TCP/UDP
26
Port Number(s), Port Type SNMP
161/162, TCP/UDP
27
File Transfer Protocol is a protocol used by:
both web browsers and specialized FTP programs to access dedicated file transfer servers for file downloads and uploads
28
Secure Shell (SSH) allows:
data to be exchanged computers on a secured channel
29
What protocol is more secure than FTP and Telnet?
Secure Shell
30
Secure FTP combats | FTP lack of security by providing:
file access over a reliable data stream, generated and protected by SSH
31
Telnet enables:
a user to make a text-based connection to a remote computer or networking device and use it as if he were a regular user sitting in front of it rather than simply downloading pages and files he would with an http:// or ftp:// connection
32
Simple Mail Transfer Protocol (SMTP) is used to:
send email from a client system to an email server, which also uses SMTP to relay the message to the receiving email server
33
Domain Name System (DNS) is the name for:
the network of servers on the Internet that translate domain names and individual hostnames into their corresponding IP addresses
34
Hypertext Transfer Protocol (HTTP) is the protocol used by:
web browsers, such as Internet Explorer, Microsoft Edge, Firefox, and Chrome, to access websites and content
35
Hypertext Transfer Protocol Secure or HTTP over SSL (HTTPS) are:
sites that are secured with various encryption schemes
36
What are the two leading protocols for receiving email?
Post Office Protocol version (POP3) Internet Message Access Protocol (IMAP)
37
What happens to the email in an email system based on POP3?
email is downloaded from the mail server to folders on a local system
38
POP3 is not a suitable email protocol for:
users who frequently switch between computers and mobile devices because email might be spread over computers
39
Internet Message Access Protocol (IMAP) is:
an email protocol that enables messages to remain on the email server so they can be retrieved from any location
40
IMAP also supports folders, so users can:
organize their messages as desired
41
What is the current version of IMAP?
IMAP4
42
To configure an IMAP-based email account you must:
select IMAP as the email server type and specify the name of the server, your username and password, and whether the server uses SSL
43
NetBIOS is a protocol that:
allows some legacy applications that were developed in the 1980s to work on larger networks and the Internet
44
Server Message Block (SMB) provides:
access to shared items such as files and printers
45
Server Message Block (SMB) uses:
packets that authenticate remote computers through what are known as interprocess communication mechanisms
46
Server Message Block (SMB) uses ports 137-139 for:
SMB traffic using NetBIOS over TCP (NetBT)
47
Server Message Block (SMB) uses port 445 for:
SMB hosted on TCP
48
Port 445 is used by:
Server Message Block SMB) Common Internet File System (CIFS)
49
Common Internet File System (CIFS) is an:
enhanced version of Microsoft SMB, which is an open, cross-platform protocol
50
Common Internet File System (CIFS) has now been widely replaced by:
updated versions of SMB (SMB 2.0 and 3.0)
51
Service Location Protocol (SLP) was designed to:
allow networked hosts to find services of other devices such as printers on the local network
52
With Service Location Protocol (SLP), devices providing services can:
announce their presence to hosts and provide configuration information
53
Apple Filing Protocol (AFP) was previously known as:
Apple-Talk Filing Protocol
54
Apple Filing Protocol (AFP) uses:
TCP/IP for transport
55
The Remote Desktop Protocol (RDP) is used by:
Remote Desktop Services (RDS), which is the Windows Server-based companion of Remote
56
Dynamic Host Configuration Protocol (DHCP) service makes life easier for a network administrator:
by automatically assigning IP addresses, subnet masks, gateway addresses, DNS servers, and so on
57
If you get your address from a Dynamic Host Configuration Protocol (DHCP) server, you are getting:
your address from a DHCP server, you are getting your address assigned dynamically, and it could change periodically
58
Simple Network Management Protocol (SNMP) is used as:
the standard for managing and monitoring devices on a network
59
Simple Network Management Protocol (SNMP) manages:
routers, switches, and computers and is often incorporated into software known as a network management system (NMS)
60
Lightweight Directory Access Protocol (LDAP) is used to:
access and maintain distributed directories of information such as the kind involved with Microsoft domains
61
Simple Network Management Protocol (SNMP) manages:
routers, switches, and computers and is often incorporated into software known as a network management system (NMS)
62
What is the main software that controls everything Simple Network Management Protocol (SNMP) based?
Network management system (NMS)
63
Network management system (NMS) is installed on a computer known as:
a manager
64
The devices monitored by Network management system (NMS) is known as:
managed devices
65
Network management system (NMS) installs a small piece of software known as:
an agent
66
Microsoft refers to Lightweight Directory Access Protocol (LDAP) as:
directory services

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