General Engineer Interview Questions

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General Engineer Interview Questions General Knowledge Questions o Describe the OSI model. o What is the difference between a repeater, bridge, router? relate this to the OSI model o Describe an Ethernet switch and where it fits into the OSI model. What is a VLAN? o Relate WDM/ATM/SONET to the OSI model. o Explain how to configure a host network interface (e.g. IP address, netmask, broadcast address)? o Describe Ethernet packet contents: min./max. size, header. o Describe TCP/IP and its protocol
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  General Engineer Interview Questions  General Knowledge Questions o Describe the OSI model. o What is the difference between a repeater, bridge, router?  relate this to the OSI model o Describe an Ethernet switch and where it fits into the OSI model.  What is a VLAN? o Relate WDM/ATM/SONET to the OSI model. o Explain how to configure a host network interface (e.g. IP address, netmask,broadcast address)? o Describe Ethernet packet contents: min./max. size, header. o Describe TCP/IP and its protocols. o Describe ATM and what are its current advantages and disadvantages.  Describe SONET o What are the maximum distances for CAT5 cabling? o Which contacts of an RJ-45 connector are used for 10BaseT? 100BaseT?1000BaseT? o Describe UDP and TCP and the differences between the two. o What is your current IP address? o Describe what a broadcast storm is. o Describe what a runt, a giant, and a late collision are and what causes each of them. o How do you distinguish a DNS problem from a network problem? o Describe the Bandwidth Delay problem. o What is CDP?  Network Troubleshooting o Explain how traceroute, ping, and tcpdump work and what they are used for?  Describe a case where you have used these tools to troubleshoot. o What is the last major networking problem you troubleshot and solved onyour own in the last year? o What LAN analyzer tools are you familiar with and describe how you usethem to troubleshoot and on what media and network types.  Routing o Explain the contents of a routing table (default route, next hop, etc.) o What routing protocols have you configured?  describe the commands to set up a route  what routing problems have you troubleshot o How do you display a routing table on a Cisco? on a host?  How do you use a routing table and for what? o What is a route flap? o What is a metric? o When do you use BGP, IGRP, OSPF, Static Routes?     Network Security o What do you see as current networking security issues (e.g. NFS mounting,spoofing, one time passwords, etc.)? o Describe a routing filter and what it does. o Describe an access list and what it does. o What are some examples of protocols used for VPN connections?  Network Management o What is a network management system? o Describe how SNMP works. o What is a MIB?  Previous Work  o Describe the working environment you are currently in, e.g. frequentinterruptions, frequent priority shifting, team or individual. o What do you use to write documentation? Editor? Mail reader? o What platform (s) do you currently work on at your desk? o How do you manage multiple concurrent high-level projects? o Describe a recent short-term stressful situation and how you managed it. o How do you manage a long term demanding stressful work environment? o Have you worked in an assignment-based environment, e.g. work request/ trouble-ticket system, and if so, describe that environment.  Programming o What applications have you written in C, JAVA, PERL, or other languages.  Network Statistics and Measurement o Describe what network statistics or measurement tools you are familiar withand how you have used them.  Wireless o Describe how 802.11b works and the advantages and disadvantages of usingit. o Describe how WEP works and its strengths and weaknesses o Describe what a VPN is and how it works.  VoIP o Describe how VoIP works. o Describe methods of QoS. o Describe the difference between the Integrated Services and the DifferentiatedServices QoS models. o How does the ToS bit work? o What is a voice codec? o What is a dial plan and what does it do? o What is a Mean Opinion Score (MoS)?  o Describe the basic boot up sequence for an IP phone.  Optical o Describe what WDM is and how it works. o What's the difference between DWDM and CWDM? Why would each beused? o What is an EDFA? What does it do? How does it work? o How many dB's of attenuation results in 50% of a signal is getting thru? 10%? o What's a typical attenuation for SM fiber at 1310 nM? 1550nM?  RAS o What is a RAS and how does it work? o Describe the current modem standard and how it works. o Describe what a PRI is and how it works.  Project Management o Describe a long term, large scale project you managed. o What is your experience with scheduling and project management?  What computer packages have you used?  What tools have you used? o How many staff have you directly managed?  Training/Presentations o How would you train other engineers/technicians on network troubleshooting? o What is the last formal training you have had including seminars,tutorials, classes, etc.? o What conferences have you attended in the last two years? o What periodicals do you read on a regular basis? o What professional organizations do you belong to and participate in?
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