Cobra Commando Interview Questions and Answers

Kubernetes is an open-source container orchestration platform that automates deployment, scaling, and management of containerized applications.

• Pods are the smallest deployable units in Kubernetes, while VMs are complete virtual machines with their own operating system and hardware resources.

• Types of services in Kubernetes include ClusterIP, NodePort, LoadBalancer, and ExternalName.

• 4G and 5G are different generations of mobile network technology, with 5G offering faster speeds...read more

APN redirection, 3GDT, MME/SGSN pooling, APN configuration, and SBA in 5G are topics related to mobile network architecture.

• APN redirection is the process of redirecting a user's data traffic to a different Access Point Name (APN) than the one originally requested.

• 3GDT stands for 3G Direct Tunneling, which allows for direct communication between the User Equipment (UE) and the Serving Gateway (SGW) without going through the Packet Data Network Gateway (PGW).

• MME/SGSN pooling i...read more

To design scalable and reliable distributed applications, consider factors like load balancing, fault tolerance, and data partitioning.

• Use load balancers to distribute traffic evenly across multiple servers

• Implement fault tolerance by replicating data and services across multiple nodes

• Partition data to distribute it across multiple nodes and avoid bottlenecks

• Use caching to reduce the load on the database

• Implement auto-scaling to handle sudden spikes in traffic

• Use message queu...read more

AAA and AAAA queries are DNS queries used to retrieve IPv4 and IPv6 addresses respectively.

• AAA query is used to retrieve IPv4 address of a domain name.

• AAAA query is used to retrieve IPv6 address of a domain name.

• AAA and AAAA queries are part of DNS (Domain Name System) protocol.

• AAA and AAAA records are stored in DNS servers.

• Example: AAA query for google.com will return 172.217.166.142.

• Example: AAAA query for google.com will return 2a00:1450:4001:81a::200e.

Charging system architecture involves components like charging stations, billing systems, and user interfaces.

• Charging system typically consists of charging stations where users can plug in their devices.

• Billing systems track usage and calculate charges based on factors like time and energy consumption.

• User interfaces allow users to monitor charging status and make payments.

• Integration with payment gateways for secure transactions.

• Support for different charging standards like...read more