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Networking Interview Questions Answers

Question 1 : What are the two types of OLTP?

Answer 1 : TP lite, based on stored procedures. TP heavy, based on the TP monitors.

Question 2 : What is the difference between an unspecified passive open and a fully specified passive open?

Answer 2 : An unspecified passive open has the server waiting for a connection request from a client. A fully specified passive open has the server waiting for a connection from a specific client.

Question 3 : What is virtual path?

Answer 3 : Along any transmission path from a given source to a given destination, a group of virtual circuits can be grouped together into what is called path.

Question 4 : Given a Class B Network with subnet mask of 255.255.248.0 and a packet addressed to 130.40.32.16, what is the subnet address?

Answer 4 : Take the 2 addresses, write them in binary form, then AND them. The answer is 130.40.32.0

Question 5 : How do you set a default route on an IOS Cisco router?

Answer 5 : ip route 0.0.0.0 0.0.0.0 x.x.x.x [where x.x.x.x represents the destination address]

Question 6 : Explain RSVP. How does it work?

Answer 6 : Resource Reservation protocol is used to reserve resources across a network. It is used for requesting a specific Quality of Service (QoS) from the network. This is done by carrying the request (that needs a reservation of the resource) of the host throughout the network. It visits each node in the network. RSVP used two local modules for reservation of resources. Admission control module confirms if there are sufficient available resources while policy module checks for the permission of making a reservation. RSVP offers scalability. On a successful completion of both checks RSVP uses the packet classifier and packet scheduler for the desired Qos requested.

Question 7 : What are the differences between a domain and a workgroup?

Answer 7 : In a domain, one or more computer can be a server to manage the network. On the other hand in a workgroup all computers are peers having no control on each other. In a domain, user doesn’t need an account to logon on a specific computer if an account is available on the domain. In a work group user needs to have an account for every computer. In a domain, Computers can be on different local networks. In a work group all computers needs to be a part of the same local network.

Question 8 : What is PPP protocol? Explain PPP packet format.

Answer 8 : Point to Point protocol helps communication between 2 computers over a serial cable, phone line or other fiber optic lines. E.g. Connection between an Internet Service Provider and a host. PPP also provides authentication. PPP operates by sending Request packets and waiting for Acknowledge packets that accept, reject or try to change the request. The protocol is also used to negotiate on network address or compression options between the nodes.

Question 9 : What is an Object server?

Answer 9 : With an object server, the Client/Server application is written as a set of communicating objects. Client object communicate with server objects using an Object Request Broker (ORB). The client invokes a method on a remote object. The ORB locates an instance of that object server class, invokes the requested method and returns the results to the client object. Server objects must provide support for concurrency and sharing. The ORB brings it all together.

Question 10 : What are the most typical functional units of the Client/Server applications?

Answer 10 : User interface Business Logic and Shared data.

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