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Network engineer i Interview Questions

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Network Engineer I interview questions shared by candidates

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F5
Network Support Engineer I was asked...February 7, 2017

How does a TCP connection initiate?

2 Answers

sync, sync-ack, ack

For this question, I responded with the 3-way handshake and briefly described its process, including which segment header fields are used and how the sequence/acknowledgement numbers are incremented. Less

Insight Global

How many hosts are available in a /30 network.

1 Answers

I answered: 2 hosts. I really should have answered there are 4 hosts but one is for the network and the last usable is for the broadcast leaving 2 hosts usable. Less

Vinculums

Can you pronounce Vinculums?

1 Answers

Vink-u-lums

Insight Global

What is the administrative distance of OSPF.

1 Answers

I answered: 110

Video Gaming Technologies

Explain TCP, Default Routes, Route Filtering, FHRP Protocol differences

1 Answers

Standard networking questions. Questions are setup for you to either answer short and sweet or go down a rabbit hole. Less

F5

How comfortable are you with Unix or Unix-like operating systems?

1 Answers

I briefly described my previous experience with Unix-like operating systems and the scope of my abilities to conclude that I was fairly comfortable with basic to intermediate level trouble-shooting and configuration of Unix-like systems. Less

F5

Which ports do DNS queries use?

1 Answers

I responded with UDP port 53.

F5

Where can you access log files on a Linux operating system?

1 Answers

I responded by indicating the default directory path to log files, which is /var/log and any directory therein specific to a service or application. Less

Sungard Availability Services

I was asked technical questions beyond the depth of my knowledge.

1 Answers

I would admit that I did not know it, but detailed how I would find the answer and my willingness to learn. Less

California Lottery

What are the 7 layers of the OSI model? What is layer does a switch belong to in the OSI model? What is layer does a router belong to in the OSI model? What is the difference between single mode fiber and multi mode fiber?

1 Answers

Q: What are the 7 layers of the OSI model? A: Application (top), Presentation, Session, Transport, Network, Data Link, Physical layer (bottom) Q: What is layer does a switch belong to in the OSI model? A: Data link Q: What is layer does a router belong to in the OSI model? A: Network Q: What is the difference between single mode fiber and multi mode fiber? A: Single-mode fiber allows only one transverse mode (fundamental mode) of light propagation. This then reduces modal dispersion compared to multi-mode fiber. Less

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