IP Flashcards

1
Q

What is the most common protocol used?

A

IP (Internet Protocol)

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2
Q

What 4 pieces are contained within an IP frame?

A

Ethernet header, IP, Protocol, IP Payload/Data, Ethernet Trailer

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3
Q

What is transported inside the IP packet?

A

TCP and UDP

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4
Q

What is TCP and what does it do?

A

Connection-oriented protocol used for reliable delivery of packets. It acknowledges that outgoing data was received.

-It can handle manage out of order messages.
-It has a flow control system that can manage how much data is sent.

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5
Q

At what layer does TCP operate at?

A

Layer 4 (transport)

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6
Q

What is UDP and what does it do?

A

One-way connectionless flow of traffic.

It has an unreliable delivery, and no data recovery.

It cannot reorder data, it just hopes it gets there OK (spray and pray).

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7
Q

What type of communication is UDP most associated with?

A

Real-time comms because its quick and does not stop to reorganize information.

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8
Q

What are two common examples of protocols that use TCP?

A

The application doesn’t worry about out of order frames or missing data. TCP handles it all.

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9
Q

What additional destination info is added to TCP and UDP transmissions?

A

Its like an IP inside an IP except its for an application that’s sending or receiving the data.

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10
Q

What are the fundamental pieces needed for communication between and server and a client?

A

Client IP address > protocol > client app. port number

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11
Q

What are non-ephemeral ports?

A

Permanent, well-known port numbers, commonly 0 through 1,023.

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12
Q

What are ephemeral ports?

A

1,024 through 65,535

Determined in real-time by the client.

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13
Q

Are port numbers designed for security?

A

No. They are for communication and to access the particular services on a device.

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14
Q

T/F: TCP port numbers are the same as USP port numbers.

A

False

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15
Q

Why is a firewall relevant to port numbers?

A

Firewalls cant filter out traffic based on the port numbers. This is considered port-based security.

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16
Q

What’s the function of FTP?

A

File exchange

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17
Q

What is a cryptographic network protocol for secure data comms, remote command-line login, remote command execution, and other secure network services between two networked computers known as?

A

SSH
(secure shell)

Secure replacement for Telnet

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18
Q

What are three characteristics of Telnet?

A

-Provides username and password authentication
-Transmits unencrypted data
-Enables remote login and command execution

Less secure alternative of SSH

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19
Q

What is SMTP protocol used for?

A

Sending email from a client

20
Q

What protocol allow retrieval of an internet page from a web server?

A

HTTP
(hyper-text transfer protocol)

21
Q

POP3 is a protocol used for:

A

Email retrieval

The opposite of SMTP

22
Q

What refers to an API that enables comms between hosts on a LAN?

A

NetBIOS

23
Q

T/F: The function of the NetBT protocol is to allow NetBIOS services to be used over TCP/IP networks.

A

True

24
Q

How does IMAP4 compare to POP3?

A

It does the same thing as POP3 but with better functionality.

25
Q

What protocol that is used in network management monitors networked devices?

A

SNMP

26
Q

What is LDAP?

A

Lightweight directory access protocol

27
Q

What protocol secures web traffic with SSL/TLS encryption?

A

HTTPS

28
Q

What are the characteristics of SMB/CIFS protocols?

A

Server Message Block/Common Internet File Stystem
–Allows shared access to files, directories and devices
–Used mainly by computers running Windows

29
Q

Which port enables the FTP’s Data Connection for sending file data?

A

TCP port 20

TCP is used for direct comms focusing on reliability

30
Q

The FTP’s Control Connection for administering a session is established through:

A

TCP port 21

TCP is used for direct comms focusing on reliability

31
Q

SSH protocol runs on:

A

TCP port 22

32
Q

What TCP port does Telnet use?

A

TCP port 23

33
Q

What port does SMTP use?

A

TCP port 25

34
Q

What port does DNS use?

A

53

35
Q

What ports does DHCP use?

A

UDP port 67 & 68

36
Q

TCP port 80 is assigned to:

A

HTTP

37
Q

POP3 uses port:

A

TCP port 110

38
Q

What ports are reserved for NetBIOS services?

A

137, 138 & 139

39
Q

What TCP port is used by IMAP (Internet Message Access Protocol)?

A

TCP port 143

40
Q

On what port are SNMP notifications from agents sent to the management station?

A

UDP port 162

41
Q

On what port do SNMP agents receive requests?

A

UDP port 161

42
Q

T/F: SNMPv3 provides packet encryption, authentication, and hashing mechanisms that allow to check whether data has changed in transit.

A

True

43
Q

TCP port 389 is used for:

A

LDAP

44
Q

What port does HTTPS use?

A

TCP port 443

45
Q
A