Top 50 🔥 Network Administrator Interview Questions and Answers

In this video we show you the Top 50 Network Administrator Interview Questions and Answers.
Preparing for your interview with this list of questions and answers will astonish your interviewer, and help you get your Network Administrator job.
The following are the questions that are answered in the video:
Question #1 - What is a Firewall?
Question #2 - Can you explain the difference between HTTP and HTTPS protocols?
Question #3 - What is a VPN?
Question #4 - What are two types of IP addresses and what are they used for?
Question #5 - What is DNS?
Question #6 - What is a default route?
Question #7 - What is DHCP and what is it used for?
Question #8 - What is DoS?
Question #9 - What is Network Topology?
Question #10 - What is a Router?
Question #11 - What is the OSI reference model, and how many layers does it have?
Question #12 - Let’s say a company is expanding its business to other countries. It wants all of its branches to remain connected to its corporate headquarters 24/7. Which network technology do you think they should use?
Question #13 - What is a Proxy Server and how do they protect the computer network?
Question #14 - What is meant by 127.0.0.1 and localhost?
Question #15 - What is a MAC Address?
Question #16 - What is Data Encapsulation?
Question #17 - What is Ipconfig and Ifconfig?
Question #18 - What is SNMP?
Question #19 - Explain three types of networks based on their sizes?
Question #20 - Define Round Trip Time?
Question #21 - What is encryption and decryption?
Question #22 - Mention two important actions performed by a Cisco switch?
Question #23 - What is a Link?
Question #24 - Briefly describe NAT?
Question #25 - What is RIP?
Question #26 - You have one 48-port switch with 3 VLANs. How many collision domains and how many broadcast domains?
Question #27 - Draw a diagram of a network you've worked on, and please explain it to me. www.lucidchart.com/pages/netw...
Question #28 - What’s the most important thing about the OSI Model?
Question #29 - Can you name the layers of the OSI Model?
Question #30 - Why can’t MAC addresses be used instead of IPv4 or IPv6 for networking?
Question #31 - Explain the difference between a VLAN and a subnet? Do you need a VLAN to setup a subnet?
Question #32 - Mention some common HTTP status codes
Question #33 - What is the smallest IPv4 subnet mask that can be applied to a network containing up to 30 devices?
Question #34 - What is a packet filter and how does it work?
Question #35 - What are the advantages of using a reverse proxy server?
Question #36 - Can you explain the difference between a router and a gateway?
Question #37 - What is a default gateway?
Question #38 - Can you tell me how DNS records work?
Question #39 - What is the number of network IDs in a Class C network?
Question #40 - A user in your company wants to connect two computers for file sharing. Is it possible to do this without using a hub or router?
Question #41 - Which connection provides a secure CLI session with encryption to a Cisco switch?
Question #42 - Let’s say a user opens three browsers on his PC to access www.cisco.com to search for CCNA information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Can you tell which information is used by the TCP/IP protocol stack on the user machine to identify which of the three web browsers should receive the reply?
Question #43 - Where are Cisco IOS debug output messages sent by default?
Question #44 - Let’s say a network administrator issues a ‘copy running-config startup-config’ command after making configuration changes on a Cisco switch. What would be the impact of these commands?
Question #45 - Do you contribute to any open source projects?
Question #46 - Tell me about the biggest mistake you've made.
Question #47 - What technical news sources do you check daily?
Question #48 - Tell me about an instance where your team, client, or boss disagreed with you. How did you resolve this situation?
Question #49 - A network administrator is measuring the transfer of bits across the company backbone for a very important application. The administrator notices that the network throughput is lower than the bandwidth expected. Can you tell which factors could influence the differences in throughput?
Question #50 - How many hosts are addressable on a network that has a mask of 255.255.255.248?
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• TOP 20 NETWORK ADMINIS...

[@rwxrw]

I pray my interview questions will be this simple.

[@SkillsBuildTraining]

All the best!

[@charlesadetunde5288]

How was your interview u had 3 months ago pls. I have got an interview for network engineer?

[@jedi_chrome]

How did your interview compare? I've got one coming up.

[@willyz95]

Anyone else listen to this on repeat leading up till an jnterview? Ive listened like 8 times lol Great information!!

[@dpak-vj4hu]

😂2nd time

[@dpak-vj4hu]

3rd time 😅

[@willyz95]

@@dpak-vj4hu GL!

[@testicular-cancer]

Did you land the job after the interview?

[@willyz95]

@@testicular-cancer I did!! Sitting at my desk right now lol.

[@swarnavamseekrishna5011]

Thank you so much for helping me to know a few network admin Q and A 's Lauren. Appreciate your efforts.

[@SkillsBuildTraining]

You're Welcome SWARNA! Happy to help!

[@pspk70]

Thank you for the nice video Q&A. Good effort !

[@SkillsBuildTraining]

Glad you enjoyed it P S!

[@MR-xc4bj]

This is more of an exam prep, not an interview. But this helps a lot for my exam. Thank you

[@SkillsBuildTraining]

You're welcome M R.

[@chrisumali9841]

Thanks for the info and presentation, have a great day

[@SkillsBuildTraining]

You're welcome Chris.

[@ArifulIslam-vb4oy]

Very helpful video for Network Engineers 🎉🎉❤ Love from Bangladesh♥

[@SkillsBuildTraining]

Thanks!

[@bhumikajoshi9776]

Hi, Nice Video and I need your guidance if you have behaviour questions available for Network Related Interviews, Thanks

[@LauraM-lt4bf]

Really like her high professional energy thank you for posting

[@SkillsBuildTraining]

Thanks Laura!

[@yazanwalweel1975]

nice video , important questions ,,excellent presentation and nice look

[@SkillsBuildTraining]

Thanks Yazan.

[@reshmioracle7852]

Worth watching

[@SkillsBuildTraining]

Thanks Reshmi. Appreciate the feedback.

[@quickitsupport7180]

I'm from Bangladesh. Helpful question and answer, thank you for the nice video making.

[@SkillsBuildTraining]

You're welcome Md Al Masud Nayon.

[@simonberhe3695]

Great video!

[@SkillsBuildTraining]

Glad you enjoyed it Simon.

[@user-wf5hh9fz5d]

Great video. Thanks.z

[@SkillsBuildTraining]

You are welcome HDM! Glad you liked it.

[@california_dude9112]

This is really great, some diagrams would probably make it even better

[@SkillsBuildTraining]

Thanks for that feedback California_dude9.

[@86cimbi]

good video,greetings from Hungary

[@SkillsBuildTraining]

Thanks for your feedback 86cimbi.

[@mrjawad867]

so many important questions

[@SkillsBuildTraining]

Thanks jAWAD!

[@Sam_mah006]

So good, thanks

[@SkillsBuildTraining]

Glad you like it!

[@shaikbasha6673]

Very good and informative video

[@SkillsBuildTraining]

Thanks for your feedback shaik.

[@junlijr3602]

Thank you very much..

[@SkillsBuildTraining]

You are welcome junli jr.

[@piobasartejr.7686]

New subs here, thank you for these skills

[@SkillsBuildTraining]

You're welcome Pio!

[@akshaybhosale6300]

Thank you so much🙏

[@SkillsBuildTraining]

You're welcome 😊

[@marikvibes9489]

Great lessons ❤ any network Administrator jobs can i find any country

[@G-H-0-S-T007]

Great Questions & Answers Definitely some figures & diagrams would help Also the most CLI commands on the whiteboard during interview process would be great Thank you for the support

[@G-H-0-S-T007]

Going to watch again & taking notes as well

[@annschlueter785]

GHOST, The intention is to help you prepare for an interview of details you should know already. And Laura actually suggests to look up a diagram and practice drawing. Good luck with Your interview. 😊

[@SkillsBuildTraining]

You're welcome!

[@mcfadesjoint]

thx for the info☺️

[@SkillsBuildTraining]

You're welcome BlindOne.

[@kasturisudarshan56]

Nice Video

[@SkillsBuildTraining]

Thanks kasturi.

[@Loeoovee]

thank you so much

[@SkillsBuildTraining]

You're welcome!

[@ahmedraafat146]

keep going, great video👏 what is your name? or could you share your linkedin??

[@SkillsBuildTraining]

Thanks Ahmed.

[@AlanKeno]

Is this series of Q&A available already written out?

[@WhatYourPastorDidntTellYou]

Can you give a tutorial on how to find how many hosts are addressable for #50?

[@SkillsBuildTraining]

Hi Zach, For sure. We can add that to one of our future videos.

[@nousername9115]

Find your block size by converting the relevant octet to binary (248 = 11111000) the last ON bit is your block size, in this case 8. Subtract 2 for network and broadcast addresses which leaves 6.

[@aussietramp]

@@nousername9115 248 is 8 address to get 25... minus 2 (Default gateway +broadcast ip) = 6

[@ThePolarcub]

@@aussietramp no the 2 address are the SUBNET address and broadcast address. The gateway would also be using one of the addressable IPs

[@alemayehukefiyalew7405]

Thank you!

[@SkillsBuildTraining]

You're welcome Alemayehu!

[@anasalnemrat4170]

Hi, do you have this Q&A in written format?

[@donaldcharleboix6309]

Open the description, all the question are there. I would look them up and research the answer. This will help enforce the knowledge you need.

[@netplusvirtua3129]

great

[@SkillsBuildTraining]

Thanks for your comment Syed.

[@netplusvirtua3129]

@@SkillsBuildTraining by the way your channel is too much organised

[@QuiqueSaldivar]

It is great thanks, but it would've been nice to have somebody answering with their own words as opposed to answering as if a paragraph is being read.

[@SkillsBuildTraining]

You're welcome Enrique. Thanks for the feedback.

[@IWantALeatherBag]

I have an interview in 1 hour for an internship i'm so stressed there's sooooooo much to know about 💀💀

[@SkillsBuildTraining]

All the best Olympe De Gouges. Let us know how it goes.

[@pratikchakraborty777]

nice

[@SkillsBuildTraining]

Thanks!

[@fixipszikon6670]

"every company wants a person who is open for disagreements" LOL The company I worked for (IBM -> Kyndryl) wanted to have droids. Customer satisfaction was that Level One (customer employee) asked us (Level Two) for some completely idiotic thing, that they do not understand, and you do something, without asking questions, because you can not want to upset the customer, and hope it is what they asked. Or that official language was supposed to be english but they ask in german, and you figure it out. And then it is your fault.And if you disagree, you are gone. Good listener meant that you do not disagree, do not talk, just accept. Open comunicator? Not even in the team, as some people are malicios.

[@snow5766]

can people in the comments say how many of these questions came up in their interviews?

[@SkillsBuildTraining]

Thanks for your question Snow.

[@lenitui5224]

its sitting an exam prep

[@SkillsBuildTraining]

Thanks for your comment.

[@symbioticparasite6268]

*How can a ipconfig/ifconfig command modify dhcp and dns, this is wrong. *a router cannot connect to the Internet, thats the work of the modem(modulator /demodulator) with converts analog signal to digital. -senior Linux engineer

[@SkillsBuildTraining]

Thanks for your comment Symbiotic.