Network engineer/architect interview questions

Network engineer/architect interview questions

Explain how traceroute, ping, and tcpdump work and what they are used for?

Describe a case where you have used these tools to troubleshoot.

What is the last major networking problem you troubleshot and solved on your own in the last year?

What LAN analyzer tools are you familiar with and describe how you use them to troubleshoot and on what media and network types.

Explain the contents of a routing table (default route, next hop, etc.)

What routing protocols have you configured?

Describe the commands to set up a route.

What routing problems have you troubleshot?

How do you display a routing table on a Cisco? On a host?

How do you use a routing table and for what?

What is a route flap?

What is a metric?

When do you use BGP, IGRP, OSPF, Static Routes?

What do you see as current networking security issues (e.g. NFS mounting, spoofing, one time passwords,

Describe a routing filter and what it does.

Describe an access list and what it does.

What is a network management system?

Describe how SNMP works.

Describe the working environment you are currently in, e.g. frequent interruptions, frequent priority shifting,
team or individual.

What do you use to write documentation? Editor? Mail reader?

What platform (s) do you currently work on at your desk?

How do you manage multiple concurrent high level projects?

Describe a recent short term stressful situation and how you managed it.

How do you manage a long term demanding stressful work environment?

Have you worked in an assignment based environment, e.g. work request/trouble ticket system, and if so, describe that environment.

Describe what network statistics or measurement tools you are familiar with and how you have used them.

Describe what a VPN is and how it works.

Describe how VoIP works.

Describe methods of QoS.

How does ToS bit work?

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