Chirwa chap 1-5

Question 1

what does ARPNET stand for?

Answer 1

advanced research projects adjency network.

Question 2

internet users doubled every ____ years?

Answer 2

1.5

Question 3

what are the regional networks?

Answer 3

collection of backbone/ network access points

Question 4

ISDN?

Answer 4

integrated services digital network- how consumers connect to isp’s.

Question 5

DNS?

Answer 5

domain name service - ips to web addresses and names of computers.

Question 6

original intent of the internet?

Answer 6

to transfer files and access servers remotely for research purposes.

Question 7

OC?

Answer 7

optical carrier - fiberoptics

Question 8

diff between serial and parallel connections?

Answer 8

serial sends one bit at a time one direction at a time while parallel and send data both directions via independent wires or twice the data in one directions at a time.

Question 9

PBX?

Answer 9

Private Branch Exchange- housed within an organization and does switching between voip and data.

Question 10

hierarchical lan’s?

Answer 10

one computer is the central pc while all others are on subnets

Question 11

Host independent Lans ?

Answer 11

each host is an equal on the network.

Question 12

gateway?

Answer 12

connects diff. types of networks together: cable to Ethernet etc.

Question 13

multiplexer?

Answer 13

concentrates data from several lines onto one line

Question 14

concentrator?

Answer 14

same as a multiplexer but has a repeater built in to make signal stronger.

Question 15

simplex?

Answer 15

transmit data in one direction only

Question 16

half-duplex?

Answer 16

sends data one direction at a time where full-duplex can send both directions.

Question 17

CSMA/CD?

Answer 17

carrier sense multiple access with collision detection- ethernet uses this

Question 18

diff. between circuit and packet switching protocols in networks?

Answer 18

circuit is when a dedicated link or set of connections is established before data is sent and received, packet switching is when data is broken up into packets, labeled then sent and possibly received out of order yet assembled correctly through the fastest links possible.

Question 19

internet address classes? A, B and C are?

Answer 19

A= 1-126 :1st octet
B= 128-191.254 (2 octets)
c= 192.1.1- 223.254.254 (3 octets)
class C allows 254 hosts on each network.
**0, 127 and 223 should never be assigned.

Question 20

ISO?

Answer 20

international organization for standards - created the OSI model (allows comparability between diff. vendor network devices.

Question 21

OSI?

Answer 21

open systems interconnection model: allows comparability of networks between diff. vendors.

Question 22

what are some mail protocols?

Answer 22

SMTP, POP3, IMAP (Internet message access protocol)

Question 23

what email protocols allows users to delete and access email on the server?

Answer 23

POP3 and IMAP

Question 24

what email protocol is used to deliver emails only and does not allow user to delete off email server?

Answer 24

SMTP

Question 25

what is -web publishing-

Answer 25

organizing how web pages are viewed

Question 26

web authoring is?

Answer 26

writing articles on the web

Question 27

why is HTML not a programming lang?

Answer 27

b/c it is not writing instructions for the cpu.

Question 28

HTML is a simpler version of?

Answer 28

SGML

Question 29

what is the W3C?

Answer 29

world wide web consortium: organization that develops web standards. lead by web inventor Bernese-lee.

Question 30

html web editor?

Answer 30

don’t need to know html to make websites

Question 31

HTML text editor/?

Answer 31

need to know HTML but allows customization- usually has java script and CSS : Cascading style sheets.

Question 32

HTTP is what?

Answer 32

networking protocol used with html.

Question 33

web editor types of programs?

Answer 33

dream weaver, google web designer, Microsoft expression and windows notepad (needs html tags)

Question 34

font color tags are in hexadecimal or binary?

Answer 34

hexadecimal.