Networking Questions

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TCP vs UDP (When to Use What)

Easy
6 views 24 Jan 2026
Explain the practical difference between TCP and UDP, and give one real use-case for each....
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What Happens in a TLS Handshake?

Medium
7 views 24 Jan 2026
Walk through a typical TLS handshake at a high level....
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Why NAT Exists

Easy
4 views 24 Jan 2026
What is NAT and why is it commonly used in home networks?...
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Three-Way Handshake #4

Easy
4 views 24 Jan 2026
Describe the TCP three-way handshake....
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Slow Start vs Congestion Avoidance #5

Medium
5 views 24 Jan 2026
In simple terms, what is TCP slow start?...
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Load Balancer Health Checks #6

Medium
4 views 24 Jan 2026
What is a health check and why do load balancers need it?...
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Idempotent HTTP Methods #7

Medium
6 views 24 Jan 2026
Which HTTP methods are idempotent and why does it matter?...
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CDN Edge Caching #8

Medium
4 views 24 Jan 2026
How does a CDN reduce latency?...
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WebSocket vs HTTP #9

Medium
4 views 24 Jan 2026
When would you choose WebSockets over plain HTTP?...
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Packet Loss Symptoms #10

Hard
4 views 24 Jan 2026
How does packet loss typically show up for users?...
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What is DNS Caching? #11

Easy
4 views 24 Jan 2026
Explain DNS caching and one common issue it can cause....
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HTTP Keep-Alive #12

Easy
5 views 24 Jan 2026
Why do HTTP connections often use keep-alive?...
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CIDR Basics #13

Easy
4 views 24 Jan 2026
What does /24 mean in CIDR notation?...
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Three-Way Handshake #14

Easy
4 views 24 Jan 2026
Describe the TCP three-way handshake....
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Slow Start vs Congestion Avoidance #15

Medium
5 views 24 Jan 2026
In simple terms, what is TCP slow start?...
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Load Balancer Health Checks #16

Medium
4 views 24 Jan 2026
What is a health check and why do load balancers need it?...
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Idempotent HTTP Methods #17

Medium
4 views 24 Jan 2026
Which HTTP methods are idempotent and why does it matter?...
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CDN Edge Caching #18

Medium
4 views 24 Jan 2026
How does a CDN reduce latency?...
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WebSocket vs HTTP #19

Medium
4 views 24 Jan 2026
When would you choose WebSockets over plain HTTP?...
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Packet Loss Symptoms #20

Hard
4 views 24 Jan 2026
How does packet loss typically show up for users?...
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What is DNS Caching? #21

Easy
4 views 24 Jan 2026
Explain DNS caching and one common issue it can cause....
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HTTP Keep-Alive #22

Easy
4 views 24 Jan 2026
Why do HTTP connections often use keep-alive?...
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CIDR Basics #23

Easy
4 views 24 Jan 2026
What does /24 mean in CIDR notation?...
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Three-Way Handshake #24

Easy
5 views 24 Jan 2026
Describe the TCP three-way handshake....
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Slow Start vs Congestion Avoidance #25

Medium
6 views 24 Jan 2026
In simple terms, what is TCP slow start?...
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Load Balancer Health Checks #26

Medium
4 views 24 Jan 2026
What is a health check and why do load balancers need it?...
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Idempotent HTTP Methods #27

Medium
4 views 24 Jan 2026
Which HTTP methods are idempotent and why does it matter?...
0 0 solutions View Details

CDN Edge Caching #28

Medium
4 views 24 Jan 2026
How does a CDN reduce latency?...
0 0 solutions View Details

WebSocket vs HTTP #29

Medium
4 views 24 Jan 2026
When would you choose WebSockets over plain HTTP?...
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Packet Loss Symptoms #30

Hard
4 views 24 Jan 2026
How does packet loss typically show up for users?...
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What is DNS Caching? #31

Easy
3 views 24 Jan 2026
Explain DNS caching and one common issue it can cause....
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HTTP Keep-Alive #32

Easy
6 views 24 Jan 2026
Why do HTTP connections often use keep-alive?...
0 0 solutions View Details

CIDR Basics #33

Easy
4 views 24 Jan 2026
What does /24 mean in CIDR notation?...
0 0 solutions View Details

Three-Way Handshake #34

Easy
2 views 24 Jan 2026
Describe the TCP three-way handshake....
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Slow Start vs Congestion Avoidance #35

Medium
2 views 24 Jan 2026
In simple terms, what is TCP slow start?...
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Load Balancer Health Checks #36

Medium
2 views 24 Jan 2026
What is a health check and why do load balancers need it?...
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Idempotent HTTP Methods #37

Medium
2 views 24 Jan 2026
Which HTTP methods are idempotent and why does it matter?...
0 0 solutions View Details

CDN Edge Caching #38

Medium
2 views 24 Jan 2026
How does a CDN reduce latency?...
0 0 solutions View Details

WebSocket vs HTTP #39

Medium
2 views 24 Jan 2026
When would you choose WebSockets over plain HTTP?...
0 0 solutions View Details

Packet Loss Symptoms #40

Hard
3 views 24 Jan 2026
How does packet loss typically show up for users?...
0 0 solutions View Details