Question 1

Which protocol standard used for wired LAN connections specifies hardware characteristics,such as which wires carry which signals?

Accepted Answer

A)  intranet 
B)  WiMax 
C)  Ethernet 
D)  EVDO 
A)  intranet 
B)  WiMax 
C)  Ethernet 
D)  EVDO C

Question 2

Identify the differences between ADSL and SDSL.

Accepted Answer

DSL lines that have different upload and download speeds are called asymmetric digital subscriber lines (ADSL).Most homes and small businesses can use ADSL because they receive more data than they transmit (e.g.,pictures in news stories),and hence they do not need to transmit as fast as they receive.
Some users and larger businesses need DSL lines that have the same receiving and transmitting speeds.They also need performance-level guarantees.Symmetrical digital subscriber lines (SDSL)meet this need by offering the same fast speed in both directions.

Question 3

Which of the following purposes does an HTTP protocol serve?

Accepted Answer

A)  flow among switches and access points 
B)  provide reliable internet transporting 
C)  enable communication among programs 
D)  conduct internet routing 
A)  flow among switches and access points 
B)  provide reliable internet transporting 
C)  enable communication among programs 
D)  conduct internet routing C

Question 4

What are the three tiers in the three-tier architecture?

Accepted Answer

Almost all e-commerce applications use t

Question 5

Very few LAN connections are made using unshielded twisted pair (UTP)cable.

Accepted Answer

A) True 
 B)False

Question 6

Cable modems provide high speed data transmission using phone lines.

Accepted Answer

A) True 
 B)False

Question 7

The ________ is the Internet-based network of browsers and servers that process HTTP or HTTPS.

Accepted Answer

A)  FTP 
B)  SMTP 
C)  Web 
D)  Data link 
A)  FTP 
B)  SMTP 
C)  Web 
D)  Data link

Question 8

File Transfer Protocol is used for email transmissions.

Accepted Answer

A) True 
 B)False

Question 9

An access point is a special purpose computer that receives and transmits wired traffic on the LAN.

Accepted Answer

A) True 
 B)False

Question 10

Leased lines are also called PSDN.

Accepted Answer

A) True 
 B)False

Question 11

Broadband lines have speeds less than 256 kbps.

Accepted Answer

A) True 
 B)False

Question 12

With a WAN,an organization can place communications lines wherever it wants because all lines reside on its premises.

Accepted Answer

A) True 
 B)False

Question 13

The distinguishing characteristic of a LAN is ________.

Accepted Answer

A)  that it connects multiple locations 
B)  that it connects at a single location 
C)  that it is a network of networks 
D)  that all lines need not reside on the company's premises 
A)  that it connects multiple locations 
B)  that it connects at a single location 
C)  that it is a network of networks 
D)  that all lines need not reside on the company's premises

Question 14

Which of the following is a component of the user tier?

Accepted Answer

A)  computers that have browsers that request and process Web pages 
B)  computers that run Web servers and process application programs 
C)  computers that run a DBMS that processes SQL requests 
D)  computers that work to minimize customer delays in a facility called a Web farm 
A)  computers that have browsers that request and process Web pages 
B)  computers that run Web servers and process application programs 
C)  computers that run a DBMS that processes SQL requests 
D)  computers that work to minimize customer delays in a facility called a Web farm

Question 15

What is the IP protocol architecture?

Accepted Answer

The protocols used on the Internet are a

Question 16

In the three-tier architecture arrangement,what is the second tier?

Accepted Answer

A)  web tier 
B)  database tier 
C)  server tier 
D)  user tier 
A)  web tier 
B)  database tier 
C)  server tier 
D)  user tier

Question 17

What are the three important functions of an ISP?

Accepted Answer

An ISP has three important functions.Fir

Question 18

Most LAN connections are made using ________ cables.

Accepted Answer

A)  VPN 
B)  UTP 
C)  POP 
D)  PPP 
A)  VPN 
B)  UTP 
C)  POP 
D)  PPP

Question 19

Which of the following protocols are commonly used by LAN?

Accepted Answer

A)  IEEE 802.11g 
B)  DSL 
C)  Cable 
D)  WiMax 
A)  IEEE 802.11g 
B)  DSL 
C)  Cable 
D)  WiMax

Question 20

What is an IP address?

Accepted Answer

A)  It is a protocol that specifies the routing of the pieces of your data communication through the networks that comprise any internet (including the Internet). 
B)  It is a number that identifies a particular device. 
C)  It is a piece of a message that is handled by programs that implement IP. 
D)  It is a program that breaks your traffic up into pieces and sends each piece along its way. 
A)  It is a protocol that specifies the routing of the pieces of your data communication through the networks that comprise any internet (including the Internet). 
B)  It is a number that identifies a particular device. 
C)  It is a piece of a message that is handled by programs that implement IP. 
D)  It is a program that breaks your traffic up into pieces and sends each piece along its way.

Exam 6: Data Communications

Which protocol standard used for wired LAN connections specifies hardware characteristics,such as which wires carry which signals?

Identify the differences between ADSL and SDSL.

Which of the following purposes does an HTTP protocol serve?

What are the three tiers in the three-tier architecture?

Very few LAN connections are made using unshielded twisted pair (UTP)cable.

Cable modems provide high speed data transmission using phone lines.

The ________ is the Internet-based network of browsers and servers that process HTTP or HTTPS.

File Transfer Protocol is used for email transmissions.

An access point is a special purpose computer that receives and transmits wired traffic on the LAN.

Leased lines are also called PSDN.

Broadband lines have speeds less than 256 kbps.

With a WAN,an organization can place communications lines wherever it wants because all lines reside on its premises.

The distinguishing characteristic of a LAN is ________.

Which of the following is a component of the user tier?

What is the IP protocol architecture?

In the three-tier architecture arrangement,what is the second tier?

What are the three important functions of an ISP?

Most LAN connections are made using ________ cables.

Which of the following protocols are commonly used by LAN?

What is an IP address?

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