CNS (Computer Networking Systems)
These should be the entrance examination questions for ITT tech CNS courses or at the very least guidelines for determining whether you should enroll or not. If you cannot answer at least 7 of these questions truthfully then I think your future at ITT is pretty grim.
1) (True or False) I wouldn’t have a problem installing any kind of Microsoft Operating System from Windows Vista to Windows 98.
2) What is a subnet mask?
3) (True or False) I’m building a new computer, and I’m thinking about attending ITT. I don’t see any need for XP pro or Vista Ultimate. Home editions will work just fine.
4) Have you ever built a computer before?
5) (True or False) In the first quarter I will not have any problems challenging out of introduction to personal computers.
6) It is said that a firewall blocks ports what is meant by this?
7) What is the difference between your cable/DSL modem and NIC card?
8) What is Ethernet?
9) 100base-T stands for what?
10) What is the difference between a router and a switch?
Stupid ITT Tech Bonus Question
What are Bootmgr and NTLDR for?
Answers
1) TRUE, if you’ve never installed an OS before I think you should bone up a little bit before handing over big bucks to big barons of big name schools. It is easy to install the listed OS’s you can learn how to do this by taking an A+ course at community college or use Trainsignal videos. Why doesn’t ITT tech offer low cost certification programs the way the community colleges do? I think that would be a great question to put to their staff.
2) A subnet mask divides the IP address in two. A subnet masks divides the network number away from the subnets or hosts. Example 192.168.1.1 255.255.255.0 the network address is 192.168.1 and the host address is 1. Another example 192.168.1.17 255.255.255.240 the network address is again 192.168.1 but the subnet is 16 because of the 240 in subnet mask and the host range is 17 through 30. I think you owe it to yourself to understand this because frankly ITT will not teach this to you. I didn’t thoroughly understand this until I was studying for CCNA in my basement and I’m not even going to mention Ipv6.
3) If you are attempting to become a computer professional you can put home edition operating systems out to pasture. This question is particularly painful to me because I’ve experienced it. I can recall being taught windows 2000 and going home and trying to study NTFS permissions on my XP Home edition computer. Of course NTFS permissions aren’t really present on the home editions. I went into computer management looking for local users and groups and never found it. But I didn’t worry too much because the instructor said that XP and 2000 pro were very similar so don’t worry if you are using XP. They are very similar if you are using XP pro and 2000. Thanks a lot.
4) It’s really not that hard to build a computer; the hardest thing is mounting the processor and knowing how much thermal paste to use. I can recall asking my program chair how to fix computers and he asked why I didn’t just ship it back to DELL.
5) You really should be able to challenge out of that course. Do you really think it’s responsible to drop down 36k and not even have spent the time for the most rudimentary certification?
6) You do of course realize when I say port I mean program number or protocol number and not a physical USB port on the back of the computer right? And that a firewalls job is to deny requests for anything to those ports from an outside source right?
7) I asked my instructor why I needed a NIC card and a cable modem to get high speed internet and he wasn’t sure or had a hard time answering. A NIC card or Ethernet adapter allows your computer to join an Ethernet network. Ethernet is the standard that is used for local area networks. If there is a gigantic office with computer after computer in rows then they connect to each other using Ethernet. Ethernet is for short distances and for offices where the computers are very close to one another. A cable/dsl modem can be likened to a Wide Area Network adapter. It is used for networking your computer to some far off Internet Service Provider and all the other computer s on the internet. Your computer is first adapted to Ethernet by the NIC and then the cable/dsl modem adapts the Ethernet network to their own Wide Area Network. And they are different types of networks carrying your information. Computer>Local Area Network (Ethernet)>Cable/DSL modem (Wide Area Network).
8) I just told you what Ethernet was. It defeated networks like Token Ring. Many people will never deal with a Token Ring network. If you want to know more go to Wikipedia and look up CSMA/CD.
9)100BASE-T is a cabling standard. 100 means 100 bits per second. Base means it is a baseband technology versus broadband. T means it is using twisted pair copper wires versus coaxial or fiber optics.
10) A router breaks up broadcast domains and is layer 3 device in the OSI model. It operates on IP addresses, whereas a switch only breaks up collision domains and will grow a broadcast domain. A switch is a layer 2 device and works on MAC addresses.
Bonus Round
NTLDR stands for NT Loader and begins the boot process for NT operating systems, Windows 2000 and XP. Bootmgr stands for Windows Boot Manager and begins the boot process for Vista and Windows Server 2008.
Before anyone does anything damn foolish like enroll in ITT Tech they should be able to answer at least 70% of these questions truthfully. If you have a hard time answering these questions and enroll in ITT tech anyway then I think you are being irresponsible. No one should walk through the doors of the CNS program without first being able to subnet. It took me about two weeks to truly grasp subneting. I recommend Sybex CCNA Cisco Certified Network Associate for doing this, that’s where I learned, because it certainly wasn’t ITT tech. Furthermore, if any of this information is incorrect I don’t see why I should worry about it, because ITT doesn’t worry about their incorrect text books.
Thanks for everything ITT.

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