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Home > Archive > i-NET+ > April 2000 > Passed 86%, yep... the wording sucked
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Passed 86%, yep... the wording sucked
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| BrianC 2000-04-06, 1:25 am |
| OK guys, did ok with a 86%. Studied for about 3 hours, (4+ years experience mind you..)The wording was terrible I thought. One question was like:
You have users connecting via RAS, what is the best way to prevent unauthorized access to your network?
A) Firewall
B) Gateway
C) Enable Callback
D) something else
Hello??? Do you want the Microsoft way or the COMPTIA way? I cringed and said A. Shoot me later.
Had the infamous "what does CSS stand for?" question. Two possible answers, both were listed. Choose one. Geez.
Had this: 7000 byte file, 56Kbps connection, how long to download?
*a) 1 second
b) 5 seconds
c) 1.25 seconds
d) 12.5 seconds
Had some silly question like: a user wants to make sure that every time he goes to a website the most updated is content is viewed, what should he do?
a) Increase cache of the flux capacitor
b) Decrease cache of the flux oscilator
c) Clean out the contents of the history folder
d) Press refresh each time they visit the site.
wording on A & B were different but gotta be creative eh? I answered D.
A lot of questions on server and client side scripts. Know the functions of C, VBScript, JavaScript, Perl, HTML... had about 10 questions on those...
Probably 50% I've seen, and 50% i was like...wtf?
Well, I'll post a dump later, I'm going to gym. Next up: Citrix CCA & CCEA, MS 70-080 IEAK5 to complete MCSE+I, and then Cisco... .=)
BrianC - Systems Administrator
MCSE, MCDBA, Master CNE, iNet+, Network+, A+ | |
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| I disagree with one of your answers
How long does it take to transfer the 7000 bytes file over the 56Kbps modem.(kilo bits per second)
It will be definitely longer than 1 second.
This is why:
7000 bytes=56000 bits.(1 byte=8 bits)
There is no way to transfer 56000 bits over 56000 bits per second connection in 1 second.
Remember about sliding window, connection-oriented protocol?
The receiving device must send acknowledgements to the transmitting device every certain number of frames.
This takes away some of your available bandwidth.
Even if you were to use connectionless protocol, which is not specified on the question, you would still not be able to transfer 56000 bits in one shot. The data would have to be segmented, broked down into frames.
Every frame has a frame header, which is using a few bits (even low overhead UDP frame header has 64 bits header) The header is used to specify the source address, destination address, checksum, etc.
So, the total number of bits is always larger than the data.
I don't know what answer CompTIA considers the correct one, but in the real world you can not transfer 56k of data using 56000 bits.
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| BrianC 2000-04-06, 5:42 am |
| Sounds good to me! Thanks webmaster...
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| It looks like maybe compTIA is assuming 10 bits per byte, as that would *theoretically* produce a download time of 1.25 seconds:
(10*7000)/56000 = 1.25
I was taught somewhere along the way to use 12 bits per byte (4 for overhead). Plus, even using 10 bits per bytes, 56kbs connections never result in 56kbs throughput, so the "right" answer is a little unrealistic. | |
| BrianC 2000-04-06, 2:41 pm |
| Yah, you guys were probably right, especially considering that a full 56Kbps modem connection isn't theoretically possible yet. What is it like 54... 53 or something?
Hey weird thing though. Here's the break down of my scoring:
*inet basics 5/6
*inet clients 12/12
development 12/14
networking 17/19
inet security 9/11
business concepts 7/10
Would you consider that question under "inet basics" or "inet clients"?? | |
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| I think this is a networking category | |
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| You have users connecting via RAS, what is the best way to prevent unauthorized access to your network?
A) Firewall
B) Gateway
C) Enable Callback
D) something else
I would have to say C.. It would not be firewall because the users are not going through the firewall...
Usually when you have RAS set up you have people dialing into you network. So you need to enable callback.... | |
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| Hi guys, just found this site and I still can't believe my eyes. I am about to try the latest CompTIA exam and here is what I know ... Users connecting via RAS ... the question asks how to prevent unauthorized access, so I believe that C and D are out. Call back is a feature that does not have the power to limit access. For B, well ... I would like to see a Gateway doing that on my network, I swear. So firewall is the good one. I have a RAS setup in my office, where we use a third party software to get authentication to the internal network via our firewall. How long to download file ... I think BrianC was right in picking up A, 1 second. At the end of the day you could do the same from 100 PCs and get 100 different results ... so I believe CompTIA wants only to know if we understand how many bits fit in 1 byte ... For the guy wanting the most updated page ... As far as I understand the guy wants to access with one click the page and get the latest update, so Refresh is out of the way as it will require an additional click, won't it ? Cleaning out the History folder won't get rid of the Internet Temp Files, so out ... and now is easy, between increase and decrease you must choose decrease as if the page has space to cache itself on your hard drive, the next time you will get the cached version. Decreasing the cache size will force the page to load the latest update. Nice sharing knowledge with you guys, hope to see more questions posted and more discussions going on. God bless. | |
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| I had looked at Enable Callback also as the answer, but my logic was that the key word in the question was "access". They didn't specify that the Firewall was sw or hw...
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BC- Systems Administrator
MCSE, MCDBA, MCNE, CCA, I+, N+, A+ | |
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| Yes, I beleive the question was very poorly worded.. I am still torn on what to choose.. Well If I get 100% on my test I will post what one I chose.. :-) |
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