Wipro Senior Engineer Interview Questions, Process, and Tips

Storage classes in programming define the scope and lifetime of variables.

• Storage classes include auto, register, static, and extern.

• Auto variables are local to a block and have automatic storage duration.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared outside of any function and can be accessed by multiple files.

A linked list is a data structure where each element points to the next element in the sequence.

• Consists of nodes where each node contains data and a reference to the next node

• Can be singly linked (each node points to the next node) or doubly linked (each node points to both the next and previous nodes)

• Allows for dynamic memory allocation and efficient insertion/deletion operations

I am comfortable with OSPF and BGP routing protocols.

• I have experience in configuring and troubleshooting OSPF and BGP.

• I am familiar with OSPF areas, LSAs, and BGP attributes.

• I have worked with OSPF and BGP in both enterprise and service provider networks.

• I understand the differences between OSPF and BGP and when to use each protocol.

• I am also familiar with other routing protocols such as EIGRP and RIP.

VPN is a secure connection between two networks. IPsec is a protocol used to secure the VPN connection.

• VPN allows remote access to a network through a secure connection

• IPsec provides encryption and authentication for the VPN connection

• IPsec tunnels can be troubleshooted by checking the configuration, verifying the network topology, and checking for any firewall or NAT issues

• Examples of VPN technologies include OpenVPN,