IT430

Question No. 1: [2 Marks]
At which layer lost packets are traced?
Answer:
Session layer

The Session Layer provides the mechanism for opening, closing and managing a session between end-user application processes. Communication sessions consist of requests and responses that occur between applications, The Session Layer of the OSI model is responsible for session check pointing and recovery. In the recovery process the lost packets are traced and retransmitted.
Question No. 3:
Write down three benefits of switching to IP Version 6. [3 Marks]

Answer:

1) Large address space.
2) Improved security
3) Better routing.
4) New header format
5) Efficient and hierarchical addressing and routing infrastructure
6) Stateless and state-full address configuration
7) Built-in security
8) Better support for quality of service (QoS)
Question No. 2: [5 Marks]
You have four computers and a switch, you want to make a network of these computers using switch, which networking topology you will use?
Answer:
Star Topology
Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages/data. The star topology reduces the chance of network failure by connecting all of the systems to a central switch. So star topology is most suitable for the given scenario