PayM Interview Questions and Answers

Interview questions for Senior Engineer position on data structures and memory management.

• Write C programs to insert and delete nodes at the beginning, end, and middle of a linked list.

• Understand the differences between singly and doubly linked lists.

• Explain what segmentation fault is and how it occurs.

• Differentiate between malloc and calloc functions.

• Define memory leak and how it can be prevented.

• Understand the XOR logic and its applications in linked lists.

• Explain null and ...read more

If unable to access GUI console, I would troubleshoot the issue by checking network connectivity, restarting the system, or using command-line interface.

• Check network connectivity to ensure the GUI console is accessible

• Restart the system to resolve any temporary issues

• Use command-line interface as an alternative to GUI console

• Verify if any firewall or security settings are blocking GUI access

Difficulties faced during layout include space constraints, equipment compatibility, and regulatory compliance.

• Space constraints can limit the placement of equipment and affect workflow.

• Ensuring equipment compatibility can be challenging when integrating new technologies with existing systems.

• Meeting regulatory compliance standards adds complexity to the layout design process.

Prevent latch up in layout by using guard rings, spacing between devices, and proper substrate connections.

• Use guard rings around sensitive nodes to prevent latch up.

• Ensure proper spacing between devices to avoid parasitic currents.

• Connect substrate properly to prevent latch up.

• Use well-taps to tie substrate to the most negative voltage in the circuit.

• Avoid high substrate resistances that can lead to latch up.

IaaS, SaaS, and PaaS are cloud computing models that provide different levels of infrastructure, software, and platform services.

• IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as servers, storage, and networking.

• SaaS (Software as a Service) delivers software applications over the internet, eliminating the need for local installation and maintenance.

• PaaS (Platform as a Service) provides a platform for developing, testing, an...read more

AD DNS DHCP are Microsoft technologies used for network management and authentication.

• Active Directory (AD) is a directory service used for authentication and authorization of users and computers in a network.

• Domain Name System (DNS) is used for name resolution of network resources.

• Dynamic Host Configuration Protocol (DHCP) is used for automatic IP address assignment to network devices.

• AD, DNS, and DHCP are often used together to manage and secure a network.

• For example, AD ca...read more