NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCE
JANUARY/FEBRUARY 2013 EXAMINATION

COURSE CODE:                  CIT 322

COURSE TITLE:                   INTRODUCTION TO INTERNET PROGRAMMING

TIME ALLOWED:               3 HOURS

INSTRUCTION:                  Answer any FOUR (4) questions in all

1a.          Briefly explain the 2 major services available on the internet. State their definitions and explain their history/origin, architecture and uses.                                                                                                                   (13 points)

  b.          Briefly explain the following protocols:

i. TCP (1.5 points)

ii. FTP (1.5 points)

iii. HTTP (1.5 points)

2a.          With the aid of a diagram and suitable examples, explain the client/server model. As part of the explanation, briefly discuss distributed processing.                                                                                                                  (9.5 points)

  b.          With the aid of a table, state the differences between a web client and a web server.                    (8 points)

3a.          Write the complete HTML code for a web page titled “National Open University”. Attach a css file called noun.css to the web page with the following text displayed in the body of the web page:

“The National Open University was established in 2007 to promote open and distance learning in Nigeria”.

(11 points)

  b.          List 3 HTML tags that require no closing/ending tag                                                                                          (4.5 points)

  c.           List 2 web browsers                                                                                                                                                        (2 point)

4a.          Write a piece of Javascript code that displays the message: “We wish you a merry Christmas!” on a web page. The code should contain one single-line comment of your choice AND one multiple-line comment of your choice. (                                                                                                                                                                  7.5 points)

b.          Write a piece of Javascript code to calculate the average of the all numbers from 0 to 100 inclusive (ie. 0, 1,2,…,100). The code should display the message: “The average is …” at the end of the calculation.

(10 points)

5a.          Write a piece of Javascript code to perform the following operations:

i. Display an alert box with the message: “This is an easy exam”.                                                                                (5 points)

ii. Display a prompt box with the message: “Please enter your phone number”.                                                 (5 points)

  b.          Define cloud computing and state how it differs from the traditional client/server model              (4 points)

6a.          List 4 advantages of using cascading style sheets in web development.                                                                 (12 points)

  b.          List the 3 different flavors of cascading style sheets                                                                                         (5.5 points)