cloudEQ
Tryolo Interview Questions and Answers
Q1. Difference between Phase 1 and Phase 2 IPsec tunnel
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 (Encapsulating Security Payload) or AH (Authentication Header) for s...read more
Q2. Difference between ER circuit and IPsec tunnel
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 high-priority traffic.
IPsec tunnel provides secure communicat...read more
Q3. How to reduce latency
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 to distribute network traffic efficiently
Q4. Application gateway working details
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
Q5. Steps of SSL authentication
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 communicate securely using the session key
Q6. Load balancer details
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
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