cloudEQ Cloud Network Engineer Interview Questions, Process, and Tips

Phase 1 establishes secure communication channel, Phase 2 sets up secure data transfer within the channel.

• Phase 1 negotiates security parameters and establishes a secure channel between two IPsec peers.

• Phase 2 sets up secure data transfer within the established secure channel.

• Phase 1 uses ISAKMP (Internet Security Association and Key Management Protocol) for key exchange.

• Phase 2 uses IPsec protocols like ESP (Encapsula...read more

SSL authentication involves multiple steps to verify the identity of the server and establish a secure connection.

• Client sends a request to the server over HTTPS

• Server responds with its SSL certificate

• Client verifies the certificate's authenticity using a trusted CA

• Client generates a session key and encrypts it with the server's public key

• Server decrypts the session key using its private key

• Client and server can now co

Load balancer distributes incoming network traffic across multiple servers to ensure no single server is overwhelmed.

• Distributes traffic evenly across servers

• Improves reliability and scalability

• Can be hardware-based or software-based

• Examples: F5 BIG-IP, NGINX, HAProxy

Application gateway is a load balancer that manages traffic to web applications.

• Acts as a reverse proxy to distribute incoming traffic across multiple servers

• Provides SSL termination, URL-based routing, and session persistence

• Can perform application layer (HTTP) load balancing

• Supports WAF (Web Application Firewall) for enhanced security

Reducing latency involves optimizing network infrastructure, minimizing data transfer distances, and utilizing caching techniques.

• Optimize network infrastructure by using faster hardware and reducing network congestion

• Minimize data transfer distances by using content delivery networks (CDNs) and edge computing

• Utilize caching techniques to store frequently accessed data closer to the end user

• Implementing load balancing

ER circuit is a dedicated point-to-point connection while IPsec tunnel is a secure virtual private network connection over the internet.

• ER circuit is a physical connection between two locations, typically provided by a telecom provider.

• IPsec tunnel is a secure encrypted connection over the internet, often used for connecting remote offices or users.

• ER circuit offers dedicated bandwidth and low latency, suitable for hig...read more