Skip to main content
Network Engineering

Good Question

 Good Question
Question score of 25 or more. This badge can be awarded multiple times.
Awarded 81 times.
What is the practical use of a /31 CIDR or 255.255.255.254?
Awarded Nov 27 at 4:36
Is a TCP server limited to 65535 clients?
Awarded Jul 12 at 17:26
Can I use a Catalyst 2960-S for iSCSI?
Awarded Apr 24 at 7:26
Usage of 192.168.xxx, 172.xxx and 10.xxx in private networks
Awarded Sep 25, 2023 at 2:00
Does physical distance affect download speed?
Awarded Jul 15, 2023 at 15:56
Why can't devices on different VLANs, but on the same subnet, communicate?
Awarded May 19, 2023 at 3:16
What is the purpose of network address?
Awarded May 19, 2023 at 3:16
Why must all areas connect to an Area 0 backbone in OSPF?
Awarded May 19, 2023 at 3:16
Should IPv4 ICMP from untrusted interfaces be blocked?
Awarded May 19, 2023 at 3:16
How to find the port a device is connected to, based on IP, on a Cisco Catalyst switch
Awarded May 19, 2023 at 3:16
Accidentally Removed Allowed VLANs from Cisco Switch Dot1Q Trunk
Awarded May 19, 2023 at 3:16
Difference between unresponsive (*) and unreachable (!H) hosts in traceroute output
Awarded Mar 5, 2023 at 19:37
Is it safe to use any wifi channel in the 2.4GHz band?
Awarded Oct 11, 2022 at 13:26
Exactly when is PMTUD performed? (Path MTU discovery)
Awarded Apr 22, 2022 at 22:08
What are the benefits and cons of IGMP snooping?
Awarded Mar 1, 2022 at 8:18
How does a switch learn a switch table?
Awarded Jun 27, 2021 at 14:17
Will IPv6 make private IP addresses become obsolete?
Awarded Apr 30, 2021 at 8:18
Is multicast on the public internet possible? And if yes: How?
Awarded Feb 23, 2021 at 22:12
Why can I traceroute to this IP address, but not ping?
Awarded Feb 18, 2021 at 1:06
Does UDP do anything at all?
Awarded Oct 14, 2020 at 22:19
What is the proper term for ipaddress/hostname:port
Awarded Aug 1, 2020 at 10:51
Why use SSH and VPN in combination?
Awarded Jul 8, 2020 at 13:21
How can I capture traffic on Cisco IOS switches?
Awarded Jun 28, 2020 at 19:04
Route servers and looking glasses - what are they?
Awarded Apr 5, 2020 at 11:40
Difference between sniffer tools
Awarded Feb 17, 2020 at 10:25
Why does DHCP use UDP and not TCP?
Awarded Feb 17, 2020 at 3:00
Why does the IPv6 header not include a checksum?
Awarded Jan 28, 2020 at 14:05
Reason for both a MAC and an IP address
Awarded Nov 18, 2019 at 22:20
Difference between control plane, data plane and management plane?
Awarded Nov 10, 2019 at 14:10
TCPDump - Filter by MAC Address
Awarded Sep 13, 2019 at 17:45
Why isn't UDP with reliability (implemented at Application layer) a substitute of TCP?
Awarded Jul 30, 2019 at 18:35
Why is 4096 the max value for VLANs
Awarded Jul 30, 2019 at 18:35
What is "oversubscription" in Networking?
Awarded Jun 27, 2019 at 9:55
OSI Model and Networking Protocols Relationship
Awarded Mar 9, 2019 at 7:00
What is the meaning / origin of the terms north-south and east-west traffic?
Awarded Feb 23, 2019 at 16:15
Is Ethernet port blinking really useful?
Awarded Feb 9, 2019 at 13:40
What is the difference between MSS and MTU?
Awarded Nov 16, 2018 at 17:00
Why are IPv4 addresses running out?
Awarded Oct 15, 2018 at 12:25
Ping port number?
Awarded Sep 10, 2018 at 8:35
What is the actual size of an Ethernet MTU
Awarded Jul 11, 2018 at 4:28
What are the downsides of OpenVPN?
Awarded Apr 17, 2018 at 6:45
Difference between Subnet and VLAN?
Awarded Apr 17, 2018 at 6:45
What is the meaning of the CRC counter on a cisco device?
Awarded Apr 17, 2018 at 6:45
Does it make sense to deploy OSPF across Metro Ethernet?
Awarded Apr 17, 2018 at 6:45
Why do we still use Ethernet?
Awarded Mar 11, 2018 at 0:00
Is 30 Mbit/s fibre for WAN faster than 30 Mbit/s copper? [duplicate]
Awarded Feb 23, 2018 at 11:57
How does gratuitous ARP work?
Awarded Dec 14, 2017 at 4:19
How can I stop an intruder plugging into an Ethernet wall socket getting access to the network?
Awarded Dec 13, 2017 at 12:16
Is "IPv10" a joke or a serious RFC draft?
Awarded Sep 10, 2017 at 20:29
Using SNMP to retrieve the ARP and mac-address tables from a switch
Awarded Sep 5, 2017 at 13:15
Network Neutrality, how does it actually work, technically speaking?
Awarded Jul 12, 2017 at 11:16
What does the 1000M on a network switch mean?
Awarded Jul 12, 2017 at 9:11
Why do I see a RST, ACK packet instead of a RST packet?
Awarded Jul 12, 2017 at 9:11
Are CoS and QoS ever interchangeable?
Awarded Jul 12, 2017 at 9:11
Does a traceroute/tracert show every hop, or does it skip/hide some details of the path?
Awarded May 25, 2017 at 20:52
Why was the MTU size for ethernet frames calculated as 1500 bytes?
Awarded Feb 4, 2017 at 12:27
(post deleted or otherwise unavailable)
Awarded Jan 30, 2017 at 11:57
Does having a longer Ethernet cable slow your connection?
Awarded Aug 19, 2016 at 13:31
Why are IPv4 addresses 32-bit?
Awarded Jun 6, 2016 at 11:38
How do you calculate the prefix, network, subnet, and host numbers?
Awarded May 17, 2016 at 21:44
1
2