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Share Your Experience: Take the 2024 Developer Survey
JFL's user avatar
JFL's user avatar
JFL's user avatar
JFL
  • Member for 8 years, 10 months
  • Last seen this week
  • Auvergne, France
42 votes
Accepted

What is "oversubscription" in Networking?

40 votes
Accepted

What is the difference between 0.0.0.0 and a loopback IP address?

30 votes

Why can't devices on different VLANs, but on the same subnet, communicate?

20 votes

Network latencies between opposite ends of the Earth

19 votes
Accepted

What happened to IPv5?

15 votes
Accepted

What purpose is the Uplink port in layman's terms and do I need it?

15 votes
Accepted

5 nines, how is it built from 4 nines links

13 votes
Accepted

What are the negative impacts of using non RFC1918 addresses on a private network?

12 votes

How come SFP modules are so incompatible?

12 votes
Accepted

Encapsulation: can a higher protocol encapsulate a lower protocol?

12 votes

Why is the ICMP protocol considered to run at layer 3 on the Wikipedia page?

12 votes
Accepted

How to Disable telnet on Cisco switch totaly?

12 votes
Accepted

Difference between default route, partial and full routing table for a BGP session

11 votes

Do I get any security benefits by NATing a network that's already behind a firewall?

10 votes
Accepted

Do I need to re-authenticate every time I switch a access point?

10 votes
Accepted

How to find the client who downloads a big file?

10 votes

How will be the ARP Request (Unicast/Broadcast) if Subnet Mask is Unknown

10 votes
Accepted

Is rerouting possible in UDP?

10 votes
Accepted

What's use of Port Isolation vs traditional VLANs?

10 votes
Accepted

What range is this in IPV4

9 votes
Accepted

Learning of MAC addresses with cut-through switching?

9 votes
Accepted

Identification field in Ipv4 header

9 votes
Accepted

Why traceroute is still Used?

9 votes
Accepted

iperf: send specific volume?

9 votes
Accepted

Duplex Mismatch Detection

8 votes

Fiber between two sites - no signal lights

8 votes
Accepted

How much RAM you actually need to keep whole global BGP routing table?

8 votes
Accepted

2960X Management VLAN

8 votes

What are the differences in the contents of datagrams, frames, and network packets?

8 votes
Accepted

Two computers connected by straight through Ethernet cable, communicating with APIPA addresses

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