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Principles of Computer Networks > Chapter 8 - TCP/IP Applications > Flashcards

Chapter 8 - TCP/IP Applications Flashcards

1
Q

The TCP port numbers ranging from 0-1023 are called _____.

A

well known port numbers

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2
Q

The TCP port numbers ranging fom 1024-49151 are called _____.

A

registered port numbers

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3
Q

The protocol used to transmit large files over the web using both ports 20 and 21 is called _____.

A

file transfer protocol

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4
Q

The protocol that is not as popular as POP3 is called _____.

A

IMAP4

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5
Q

Port 23 is used by ______ to emulate terminals on TCP/IP networks.

A

Telnet

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6
Q

When you send out an email message it uses ______.

A

Simple Mail Transfer Protocol (SMTP)

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7
Q

The quickest way to send to a few coworkers information an upcoming meeting would be to send an ________.

A

email

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8
Q

The _________ utility can be used to view the endpoints of your computers sessions.

A

Netstat

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9
Q

Telnet has largely been replaced by _____ which provides better security through data encryption.

A

secure shell (SSH)

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10
Q

TCP is _______ in that it requires computers to acknowledge each other, while UDP is _____ in that it provides no guarantee packets were successfully received.

A

Connection Oriented / Connectionless

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11
Q

What port number is the well-known port used by Web servers to distribute Web pages to Web browsers?

A. Port 20

B. Port 21

C. Port 25

D. Port 80

A

Port 80

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12
Q

What protocol handles large file transfers between Internet users?

A. FTP

B. IMAP

C. POP3

D. SMTP

A

FTP

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13
Q

How can you tell that a secure Web page transaction is taking place?

A. The URL in the address bar starts with https.

B. The URL in the address bar starts with http/ssl.

C. The URL in the address bar starts with ssl.

D. The URL in the address bar starts with tls.

A

The URL in the address bar starts with https.

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14
Q

Jane has been tasked to find and implement an application that will enable her boss to log into and control a server remotely and securely. Which of the following applications would work best?

A. E-mail

B. FTP

C. Telnet

D. SSH

A

SSH

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15
Q

SSH uses which port?

A. TCP port 22

B. TCP port 23

C. UDP port 22

D. UDP port 23

A

TCP port 22

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16
Q

What is the session information—IP address and port number—stored in RAM called? (Select two.)

A. Endpoint

B. Port

C. Session

D. Socket

A

socket & endpoint

17
Q

Which of the following are names of Web servers? (Select two.)

A. Apache

B. Exchange

C. IIS

D. Proxy server

A

Apache & IIS

18
Q

Which of the following are names of Internet browser software? (Select two.)

A. Internet Surfware

B. Edge

C. Firefox

D. WS_FTP

A

Edge & Firefox

19
Q

Which of the following items does the S in HTTPS represent?

A. Proxy server

B. Secure Sockets Layer

C. Subnet mask

D. Switch

A

Secure Sockets Layer

20
Q

When using Windows, which command will show all used ports and the IP addresses using them?

A. telnet localhost 25

B. telnet –ano

C. netstat –an

D. netstat –ao

A

netstat -an

21
Q

What is the main difference between TCP and UDP?

A. TCP is connection-oriented, whereas UDP is connectionless.

B. TCP supports HTTPS, whereas UDP supports SSL.

C. TCP sessions can be encrypted, whereas UDP sessions cannot.

D. TCP is used on Windows, whereas UDP is used on Linux/UNIX/macOS.

A

TCP sessions can be encrypted, whereas UDP sessions cannot.

22
Q

Which connectionless protocol handles chores such as disconnect messages?

A. TCP

B. UDP

C. ICMP

D. IGMP

A

ICMP

23
Q

John says he’s concerned that open ports on the server make it vulnerable to attacks. What does he mean by “open ports”?

A. An “open port” is a socket prepared to respond to any IP packets destined for that socket’s port number.

B. An “open port” is a socket prepared to respond to any IP packets on the network.

C. An “open port” is a socket prepared to respond to any IP packets destined for an “open” command on port 80.

D. An “open port” is a socket unavailable to respond to any IP packets destined for that socket’s port number.

A

An “open port” is a socket prepared to respond to any IP packets destined for an “open” command on port 80.

24
Q

Which port does SMTP use?

A. TCP port 22

B. TCP port 25

C. TCP port 80

D. UDP port 81

A

Port 25

25
Q

What should you do if you are having difficulty transferring files with your FTP client when your router supports NAT?

A. Configure your FTP client to use active FTP.

B. Configure your FTP client to use passive FTP.

C. Use SSH to transfer your files instead.

D. Use Telnet to connect to the server and then use netstat to transfer the files.

A

Configure your FTP client to use passive FTP.

Principles of Computer Networks (12 decks)

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