*Chapter 08 Quiz (ITN101) - TCP/IP Applications

A port number is an 8-bit value between 0 and 65535. (T/F)

A port number is an 8-bit value between 0 and 65535. (T/F)

False

Using the ping command, which message is displayed if your computer has no route to the address listed?

Destination host unreachable

A Web client's source port number, generated pseudo-randomly by the Web client computer, is classically assigned as a(n) __________ ports.

dynamic

Which term describes the status of a port that is part of an active, working endpoint pair?

established port

Which protocol is popular for moving files between computers on the same LAN, where the chances of losing packets are very small?

TFTP (Trivial File Transfer Protocol)

Which command is universally known as the "show me the endpoint" utility?

netstat

Secure Shell (SSH) is a more secure replacement for Telnet. (T/F)

True

Many years ago, the ping command had a bug that allowed malicious users to send malformed ping packets to a destination, causing __________.

the ping of death issue

The Internet Control Message Protocol (ICMP) works at Layer 3 to deliver connection-oriented packets. (T/F)

False

The Internet Control Message Protocol (ICMP) works at Layer 3 to deliver connection-oriented packets.

Class D range

Connectionless sessions are designed to check for errors. (T/F)

False

At any given point, your computer can only be connected to one server at a time. (T/F)

False

Telnet runs on TCP __________.

port 23

Which term is used for any single communication between a computer and another computer?

session

Which protocol, used to handle low-level housekeeping tasks such as router advertisements, involves simple, single sessions that consist of a packet or a series of packets?

ICMP (Internet Control Message Protocol)

Which protocol enables you to administer a server remotely and communicate with other servers on your network?

Telnet

Mozilla Firefox is an example of a __________ application.

Web client

What file transfer protocol uses UDP port 69?

TFTP

The Internet Control Message Protocol (ICMP) works at __________ to deliver connectionless packets.

Layer 3

What name is given to the port numbers in the range of 0 to 1023?

well-known port numbers

If you ping a device and no echo reply comes back before the default time, ping will respond with a __________ message.

request timed out

Which protocol is the secure counterpart of HTTP used to enable connections between clients and servers that hackers can't break?

HTTPS

Which protocol is the preferred alternative to POP3 and runs on TCP port 143?

IMAP4

Which e-mail server type has over 50 percent market share and runs on just about everything, from Unix/Linux to Windows?

Exim

Every serving application has a listening port. (T/F)

True

Which Transport layer protocol does Trivial File Transfer Protocol (TFTP) use?

UDP

Using TCP, once a server finishes sending a Web page, it sends a FIN (final) segment. (T/F)

True

Two computers first acknowledge the other, after which they conduct their communication. They end by closing the communication. Which term describes this communication process?

connection-oriented

Which protocol involves a three-way handshake?

TCP

Which protocol is the underlying protocol used by the World Wide Web?

HTTP

Which TCP ports does the old active File Transfer Protocol (FTP) use by default?

20 and 21

Which term defines a number used by the operating system to track all the running programs?

process ID (PID)

Which term describes the status for a socket that is prepared to respond to any traffic destined for that socket's port number?

open port

Which switch is used with the Windows netstat utility to show name of a running program?

-b

Which type of port has a number in the 1024 to 49151 range?

registered

A particular multicast called an IGMP group is assigned an address in which class range?

Class D range

There is a strong movement toward using the term Internet Protocol instead of the term TCP/IP. (T/F)

True

Which switch is used with the Windows netstat utility to show the process ID?

-o

Which protocol is used to send e-mail from clients and between e-mail servers over TCP port 25?

SMTP