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Network + > TCP/IP Applications > Flashcards

TCP/IP Applications Flashcards

1
Q

What is a single unit of information transmitted and used by the different protocols provided in frame segments.

A

Protocol Data Units ( PDU’s )

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2
Q

When talking about the TCP part of the Frame or PDU we are talking about:

A

TCP Segment

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3
Q

When talking about the UDP part of the Frame or PDU we are talking about:

A

UDP Segment

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4
Q

What’s it called when a computer using TCP wants to get out to the internet, the client machine:
1st sends a Syn packed to the server
2nd the server sends back a SynAck back to the Client
3rd the client sends back to the Server an ACK

A

TCP 3-Way handshake

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5
Q

Ethernet Frames are used by :

A

Switches and routers

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6
Q

When a computer is using UDP, its communication is:

A

one way

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7
Q

this Protocol sends one little message over the internet like ARP or PIng are examples of :

A

Internet Control Message Protocol ( ICMP )

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8
Q

This protocol supports multicasting:

A

Internet Group Management Protocol ( IGMP )

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9
Q

Whenever you see an address starting with 224.0.0.0 it is called:

A

Multicast address

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10
Q

Both the ICMP and IGMP work at the:

A

Internet Layer 2 in the TCP/IP model and the network layer 3 of the OSI model.

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11
Q

these tools check and count all the router Hops

A

Tracert for Windows / Traceroute for Linux

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12
Q

When routers don’t respond well to Tracert use this instead :

A

pathping

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13
Q

this tool is a Protocol Analyzer , it strips the frames apart , segments and organize all the data with info for troubleshooting, is a Capture tool that grabs the packets, and displays the traffic flow of ethernet frames

A

Wireshark

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14
Q

A text based command that lists all the open ports and connections on your computer at any given moment.

A

netstat

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15
Q

This is a data-network packet analyzer program that is similar to Wireshark and runs under a CLI like Linux.

A

tcpdump

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16
Q

Port 443 is actually a:

A

HTTPS website

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17
Q

this command presents the results numerically in netstat:

A

netstat -n

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18
Q

this command presents or shows the executable for every connection under the netstat command:

A

netstat -b

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19
Q

this netstat command shows the executable and process id for every computer connected to your machine. Also, using the PID you find, look in the Task manager to see what is actually running:

A

netstat -o

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20
Q

you can actually run all the netstat commands together:

A

netstat -bno

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21
Q

this netstat command shows all active ports:

A

netstat -a

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22
Q

This port is also referred to as SMB 445

A

Port 445

23
Q

This netstat flag or command shows the local routing table:

A

netstat -r

24
Q

These are 2 web server programs / software

A

Microsoft IIs and Apache

25
Q

Simple way to see if a web server is running on a computer is?

A

run the command: netstat -a

26
Q

On a Windows based OS, to see most items on a Web Server use or go to:

A

Tools then Internet options

27
Q

HTTP uses what port number?

A

80

28
Q

these type of accounts allow public access to FTP servers:

A

Anonymous accounts

29
Q

FTP clients send out communications on which port?

A

port 21

30
Q

FTP servers respond to clients on which port?

A

port 20

31
Q

Web browsers make good FTP clients

A

ftp://ftp.microsoft.com

32
Q

Another way to connect to a FTP server besides in Windows is using a:

A

command prompt which is basically an FTP client / type ftp enter

33
Q

What FTP command downloads files:

A

GET

34
Q

What FTP command uploads files?

A

PUT

35
Q

FTP is not an encrypted protocol

A

can see most basic files

36
Q

SFTP or secure FTP uses _____ and _____ to encrypt the files stream:

A

SSL and TLS

37
Q

A similar but not as robust protocol to FTP is called:

A

TFTP or trivial FTP uses UDP Port 69

38
Q

FTP is not ________ so all passwords and data are sent in the clear.

A

encrypted ( but SFTP is )

39
Q

Sending email uses what non-secured protocol

A

SMTP (simple mail Transfer Protocol) - port 25

40
Q

Receiving email can use either of these 2 non-secured protocols which are:

A

POP3 (Post Office Protocol v3) - port 110
IMAP (Internet Message Access Protocol v4) - port 143

41
Q

example of email server software is:

A

hMailServer

42
Q

Implementing TLS for securing email uses what port numbers:

A

IMAP - 993
POP - 995
SMTP - 465

43
Q

This secured protocol encompasses all 3 email protocols:

A

STARTTLS - Port 465 (1st one used) caused conflicts with non-secured SMTP so it started using 587

44
Q

this is an unsecured remote command prompt to a remote computer and is considered the oldest application on the Internet:

A

telnet runs on Port 23

45
Q

A poplular Telnet server is called:

A

freeSSHd

46
Q

A secured encrypted version of Telnet or terminal emulator:

A

SSH ( Secure Shell ) runs on TCP port 22

47
Q

What does SSH use to to encrypt traffic:

A

authentication key

48
Q

Another similar protocol to Telnet but was replaced with SSH that didn’t even use a login or password like Telnet is called:

A

Rlogin and uses Port 513

49
Q

These protocols use UDP to synchronize devices on a network and use port 123

A

Network Time Protocol ( NTP )
Simple Network Time Protocol ( SNTP )

50
Q

NTP operates in a hierarchical fashion or:

A

Clock Strata

51
Q

To reserve a certain number of IP’s so the DHCP server doesn’t give them out to any computer on the network like for the gateway or email server is called:

A

IP reservation

52
Q

If you have a computer that it’s not critical if it has an IP but you know it should have priority, (aka a security camera), you can use:

A

MAC reservation

53
Q

If you have issues with your network running out of IP’s, maybe reduce the _____________ for the IP’s on the DHCP server.

A

lease times

54
Q

This tool is used to manage or keep track of all of your IP addresses especially for servers and VM farms is called:

A

IP Address Management or ( IPAM )

Network + (20 decks)

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