College of Computing And Informatics Reports

Assignment 3
Deadline: Sunday 05/04/2020@ 23:59
[Total Mark for this Assignment is 5]
College of Computing and Informatics
Instructions:
You must submit two separate copies (one Word file and one PDF file) using the Assignment Template on
Blackboard via the allocated folder. These files must not be in compressed format.
It is your responsibility to check and make sure that you have uploaded both the correct files.
Zero mark will be given if you try to bypass the SafeAssign (e.g. misspell words, remove spaces between words,
hide characters, use different character sets or languages other than English or any kind of manipulation).
Email submission will not be accepted.
You are advised to make your work clear and well-presented. This includes filling your information on the cover
page.
You must use this template, failing which will result in zero mark.
You MUST show all your work, and text must not be converted into an image, unless specified otherwise by the
question.
Late submission will result in ZERO mark.
The work should be your own, copying from students or other resources will result in ZERO mark.
Use Times New Roman font for all your answers.
E-Portals Development
Student Details:
Name: Ayman Rafa Alamri
CRN: 21422
ID: 160079583

Pg. 1 Question ThreeQuestion Three
Question One
What is the difference between synchronous and asynchronous web methods?
Give an example of synchronous and asynchronous web methods? How can
we transform a synchronous web method to asynchronous web methods?
Synchronous web method are the type of execution that deals with direct query and
response system between client and server. In this communication, client sends request
to the server and wits until the server sends back the acknowledgement. The main
advantage of this method that it saves time for the overall operation (Niwa et al. 2015).
Some of the example of the Synchronous web methods are IP calling, Video calls,
login operations, website browsing, web user interface etc.
On other hand, the asynchronous operation takes time for the overall execution
of the process request. However in this method all the parties does not need to be
present at the same time to communicate. It does not require acknowledgement from
the server side to proceed the communication. This type of method is widely used in
the message and text based communication (Morton et al. 2018).Email is great
example of asynchronous web method where the presence of receiving party is not
required to receive the ml from the sender.
Web services only allow synchronous mode of operation. However using
synchronous method, it can be converted into asynchronous method. In between the
request and response message a correlation identifier is established. A refractor
receives the request at server end, sends it to the queue for processing later and
instantly sends acknowledge to the sender. When the response of the queued messages
are ready, the replies are sent to the address of the received messages. The correlation
identifier is used to identify the sender who has sent the request.
1.5 Marks
Learning
Outcome(s):
Recognize the
main elements of
portals
development.