1.4 Protocols & Ports

Question 1

IMAP4 is an email retrieval protocol that lets users

Answer 1

access their email from various locations without the need to transfer messages or files back and forth between computers.

Question 2

Hypertext Transfer Protocol (HTTP)

Answer 2

80

Question 3

r

Messages remain on the remote mail server and are not automatically downloaded to a client system.

Answer 3

What happens to messages that are accessed using the IMAP4 protocol?

Question 4

80

Answer 4

HTTP

Question 5

SNMP

Answer 5

161

Question 6

r

is a host-to-host protocol like TCP, but it does not acknowledge each packet transmitted, nor does it allow for retransmission of lost packets.

Answer 6

User Datagram Protocol (UDP)

Question 7

Ideal for streaming audio and video. Faster communications, however, this speed comes at the expense of possible errors or data loss.

Answer 7

UDP

Question 8

445

Answer 8

SMB/CIFS

Question 9

25

Answer 9

SMTP

Question 10

TCP provides the following services to ensure message delivery:

Answer 10

• Sequencing of data packets
• Error checking
• Acknowledgment of packets sent
• Retransmission of packets lost

Question 11

443

Answer 11

HTTPS

Question 12

File Transfer Protocol (FTP)

Answer 12

20/21

Question 13

Network Time Protocol (NTP)

Answer 13

123

Question 14

Domain Name Server (DNS)

Answer 14

53

Question 15

SMTP is used to route

Answer 15

electronic mail through the internetwork.

Question 16

R

(UDP) User Datagram Protocol is ideal for streaming audio and video. Faster communications, however…

Answer 16

this speed comes at the expense of possible errors or data loss.

Question 17

r

managing complex networks by letting host exchange configuration and status information.

Answer 17

Simple Network Management Protocol (SNMP) is designed for

Question 18

67/68

Answer 18

DHCP

Question 19

Lightweight Directory Access Protocol over TLS/SSL (LDAPS)

Answer 19

636

Question 20

143

Answer 20

IMAP4

Question 21

110

Answer 21

POP3

Question 22

r

accurate and timely delivery of network communications between two hosts.

Answer 22

TCP provides services that ensure

Question 23

rr

123

Answer 23

Network Time Protocol (NTP)

Question 24

20/21

Answer 24

FTP

Question 25

LDAP is used to

Answer 25

update, search and retrieve data from a directory service.

Question 26

Lightweight Directory Access Protocol (LDAP)

Answer 26

389

Question 27

# rr 69

Answer 27

Trivial File Transfer Protocol (TFTP)

Question 28

# r prevent errors and control information by allowing hosts to exchange packet status information

Answer 28

Internet Control Message Protocol (ICMP)

Question 29

# r the console of a computer system somewhere else in the network. There is no encryption it's not secure

Answer 29

Telnet allows a computer to remotely access

Question 30

Telnet allows a computer to remotely access

Answer 30

the console of a computer system somewhere else in the network. It does not use encryption, it is recommended that you use a secure alternative SSH.

Question 31

SSH allows for secure interactive control of

Answer 31

Remote Host. It's a secure and preferred alternative to Telnet.

Question 32

TELNET

Answer 32

23

Question 33

Session Initiation Protocol (SIP) Session Initiation Protocol (SIP) over TLS

Answer 33

5060 5061

Question 34

HTTP over Secure Sockets Layer (HTTPS)

Answer 34

443

Question 35

User Datagram Protocol (UDP) is a host-to-host protocol like TCP, but

Answer 35

it does not acknowledge each packet transmitted, nor does it allow for retransmission of lost packets.

Question 36

23

Answer 36

TELNET

Question 37

69

Answer 37

Trivial File Transfer Protocol (TFTP)

Question 38

TCP provides services that ensure

Answer 38

accurate and timely delivery of network communications between two hosts.

Question 39

Simple Mail Transfer Protocol (SMTP) uses a process

Answer 39

...called "store and forward," to move emails across networks.

Question 40

Internet Message Access Protocol (IMAP4)

Answer 40

143

Question 41

Secure Shell (SSH)

Answer 41

22

Question 42

3389

Answer 42

RDP

Question 43

Post Office Protocol (POP3)

Answer 43

110

Question 44

161

Answer 44

SNMP

Question 45

NTP is used to

Answer 45

communicate time synchronization information between systems on a network.

Question 46

Dynamic Host Configuration Protocol (DHCP)

Answer 46

67/68

Question 47

# rr 5060 5061

Answer 47

Session Initiation Protocol (SIP) Session Initiation Protocol (SIP) over TLS

Question 48

Trivial File Transfer Protocol (TFTP)

Answer 48

69

Question 49

53

Answer 49

DNS

Question 50

# r * Destinations that are unreachable * The # of hops a packet takes through the network * Test Connectivity

Answer 50

ICMP works with IP to send notices for the following:

Question 51

What are the four protocol types?

Answer 51

TCP - Transmission Control Protocol IP - Internet protocol suite UDP - User Datagram Protocol ICMP - Internet Control Message Protocol

Question 52

ICMP works with IP to... (3)

Answer 52

* Test Connectivity * Notify of unreachable Destinations * Notify the # of hops a packet takes through the network

Question 53

# r * Sequencing of data packets * Error checking * Acknowledgment of packets sent * Retransmission of packets lost

Answer 53

TCP provides the following services to ensure message delivery:

Question 54

# rr 1720

Answer 54

H.323 Call Signaling

Question 55

What happens to messages that are accessed using the IMAP4 protocol?

Answer 55

Messages remain on the remote mail server they are not automatically downloaded to a client system.

Question 56

Simple Mail Transfer Protocol (SMTP)

Answer 56

25

Question 57

# r update, search and retrieve data from a directory service.

Answer 57

LDAP is used to

Question 58

# rr 636

Answer 58

Lightweight Directory Access Protocol over TLS/SSL (LDAPS)

Question 59

389

Answer 59

LDAP

Question 60

Simple Network Management Protocol (SNMP) is designed for

Answer 60

managing complex networks by letting host exchange configuration and status information.

Question 61

SMB/CIFS

Answer 61

445

Question 62

H.323 Call Signaling

Answer 62

1720

Question 63

Remote Desktop Protocol (RDP)

Answer 63

3389

Question 64

22

Answer 64

SSH