1) CARRY UR TOOLS - in a technical, hands-on field, nothing says "im professional" more than carrying a toolkit with you. it leaves a good impression of preparedness and would also be useful in the event of a surprise practice test.
If you dont have one, build one -you'll need it later on anyway. It actually worked for me! when i went to the interview the head of ICT noticed that i was carrying my toolkit and asked why i carried it.. i said "for the practical exam" . he laughed and said "you didnt need to carry it you know, we would have provided you with the necessary tools", then i said "i carried it anyway so that im always prepared for anything that could happen" this of course made an impression on him.
2) STUDY AHEAD- Dnt mistake this for the average "practice mock interview questions".. but this is mostly in order to help answer technical questions. interviewers will always try gague your knowledge on technical terms and methods of implementation. its always wise to study ahead on terms you may need and re-familiarize yourself with terms and also methods of implementation.
this is 1 tip i got as well, if your applying for a networking job, look through some pass papers or some practice exams so that you can refresh your memory on things. in the interview, i was asked about my capabilities to set up and maintain the current network, so i asked about the equipment used, protocols, operating system and so on. so when they pulled up a scenario and asked me questions about terms i was able to answer them out of memory.
3) TRY TO REMEMBER NAMES- To give the greatest impression to your interviewers, do research on the company and try to remember the names of the persons who maybe interviewing you. This shows that you have prepared thoroughly and that you have an excellent memory. If you cant find names before hand then no problem - when you get on location, introduce yourself with a strong handshake and a smile, when they they introduce themselves, you should try remember their names from that point on. Its always good to know the name of the person who's question you are answering. It is even better when you remember their names on the second interview
this is something i always practice on my interviews. remembering the names of the persons who interview you is always a good thing. before i went in for my interview, i knew the names of the entire panel so it could address the answer of my questions to who had asked initially.
3) WRITE A THANK YOU LETTER- If you want them to remember you as a courteous, well mannered applicant - you should always thank your interviewers for shortlisting you. remember that there are thousands of persons who are applying for the same job so you should always let them know that you are thankful that they had selected you as a worthy candidate. after the interview shake the interviewer(s) hand(s) and thank them for calling - later on, remember to write and send a professional letter of appreciation (with no attachments) to them either through post or through e-mail