Topics
| Stream | Topics | % Done |
|---|---|---|
| Networking | OSI layers | 100% |
| TCP, IP, UDP, ICMP, ARP, DHCP, NAT, FTP | 100% | |
| HTTP, SSL | ||
| Caching, Cookies, Certificates | ||
| DNS | ||
| SMTP | ||
| Latency, Tail Latency | ||
| BGP, OSPF | ||
| Load Balancing | ||
| Linux | Shell scripting | |
| Kernel, libraries, system calls | Done | |
| Memory Management | ||
| Permissions, file systems | Done | |
| Linux Commands Brushup | Done | |
| Programming | Python Brushup | |
| Algorithms | ||
| HTML, CSS | ||
| Databases, SQL, Indexing | ||
| Technical Quesitions | ||
| Behavioral Questions | ||
| Leadership Questions | ||
| Designing | Medium sized Campus Design | |
| Cheatsheet |
Preparations
- 1st round
- 1st Week Dec starting
- Video interview
coding tech communication thinking
- 1 Hour:
1st Troubleshooting code Distributes system Web & Network technologies
- F2F - Bangalore office
2 tech Networking/General Web troubleshooting 1 manager
- Share use cases
- Working with Code (15 min)
- What is code, Issue & How to improve it.
- Ask question about question
- Break it down
- No IDE
- No library
Topics 2
- Semaphores
- Mutex
- Threads
Questions
- What are alternative solutions of Spanning tree?
Port Isolation Vlan Isolation Loopback Detection
- Tail Latency
200ms latency -> initial rto by most OSs Do not consider normal Retransmissions, but only RTOs exponential backoff rto will double with each iteration -> 400ms, 800ms, 1000ms congestion, pathmtu not honored, icmp rate-limited, reply pathmtud-reply packets dropped, os issues -> Zero window -> cpu high(response slow), memory high, disk issue
- 4k video file edit latency
RTP uses tcp, n/w level issues, check latency on which side traces,