Answer the Questions:

Q1 Programming

a) Describe how you can use Java and CORBA develop distributed applications.

b) Contrast middleware and portable programming language as an approaches to building distributed systems.

c) Describe the following middleware and give one strength and weakness:
i. DCOM

ii. RMI

d) Name and explain four value added extensions that transaction monitors have over traditional client/server communication and Remote procedure call (RPC) and Object Request Broker (ORB) invocation.

e) (i) Describe architecture of CORBA.

(ii) Explain how components in e (i) assist in developing distributed sales and product Shipping application for an organization.

(iii) Explain advantages of developing above application with CORBA instead of client/server architectures.

Q2 Networking

a) Differentiate the following in computer networks
i. End systems and intermediate systems
ii. Windowing and sequencing
iii. Brouter and router

b) Explain Modes of operations in a network e.g. (simplex, half duplex, full duplex)

c) 5Explain fiber optics, coaxial, and wireless network and discuss advantages and disadvantages.

d) Discuss protocols as used in computer networks and explain the following protocols giving examples
i. http
ii. Ethernet
iii. Local Talk
iv. Token Ring
v. FDDI
vi. ftp

e. i. DESCRIBE IEEE802.11
ii. COMPARE IEEE 802.11 VS 3G CELLULAR
iii. BLUTOOTH.