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2 questions

Discussion in 'A+' started by aestudiar, Aug 17, 2010.

  1. aestudiar

    aestudiar Byte Poster

    1.- This one is about wireless:
    Is the following table correct?
    802.11a > 54 Mbps >5-GHz
    802.11b > 11 Mbps >2.4-GHz
    802.11g > 54 Mbps >5-GHz
    802.11n > 100+ Mbps >2.4/5-GHz

    2.- Network (Ethernet cables, all of them UTP):
    CAT5 100Mbps
    CAT5e 1Gbps
    CAT6 10Gbps

    Feel free to edit/add extra info.
    :p thanks!
  2. Simonvm

    Simonvm Kilobyte Poster

    802.11g works in the 2,4 Ghz range
    Certifications: MCITP: EST, MCDST, MCTS, A+, N+, CCNP, CCNA Wireless
  3. aestudiar

    aestudiar Byte Poster

    Thanks, that's what I thought, but the Meyers book, in the glossary has the above (incorrect) information.
  4. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

    There are few mistakes in all books. Meyers has an errata website which corrects all the mistakes, I never checked for any MS errata sites though.
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  5. Gogs

    Gogs Bit Poster

    Not saying you'll have problems but when I did my A+ and N+ I always used to get confused with the wireless characteristics as I tried remembering them in alphabetical order as you've listed. The way I got to remember was to think of the word B(e)GAN:

    802.11b > 11 Mbps >2.4-GHz
    802.11g > 54 Mbps >2.4-Ghz
    802.11a > 54 Mbps >5-GHz
    802.11n > 100+ Mbps >2.4/5-GHz

    Then all I had to remember was the first one was slowest but shared a frequency with the next one and the rest fell into place
    Certifications: in Signature
    WIP: MCITP: Server Administrator (646) , Security+
  6. Shizzle

    Shizzle Bit Poster

    There are lots of clues in the way they are written. If you start at the bottom, as in the slowest and work you way up it will look like this.

    10 Base 5
    10 mbps
    500 meters the clue being 10 and the 5 to associate with 500 and 10 mbps....Thicknet if you can rem that

    10 Base 2
    10 mbps
    185 meters 10 mbps, LESS than 2 so 185 meters thin-net coax 30 devices per segment

    10 Base T
    10 mbps
    100 meters T for twisted pair, 10 mbps, 100 meters the odd one to remember as it has no association

    100 Base TX
    100 mbps
    100 meters T for twisted cat 5, 100mbps in the 100 base TX, 100 meters in the 100 base tx

    100 meters 1000mbps/1 gbps, t for twisted pair, 100 meters

    That is how i remembered it.


    G is backward compatible to B, N as well...so far and all have MAC filtering as well as an option.

    Hope it helps

    Edit...All the T's here are 100 meters as well so that is easy to remember

    Wish i could tell you more about the test but there is a NDA on it and i respect that.
    Last edited: Aug 19, 2010

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