Computer Networking Module 2 Module 2 Review Module Review Fiber cabling is not

Question

Computer Networking

Module 2

Module 2 Review

Module Review Fiber cabling is not as secure as STP. True or False? 1. a. True b. False Fiber optic cabling provides a high degree of immunization to noise 2. True or False a. True b. False 3. Fiber optic cables often have several glass fibers to increase the speed that light travels across a physical network. True or False True b. False Which purposes does a properly grounded equipment installation serve? (Choose three.) 4. Earthquake damage prevention a. b. Overvoltage protection Provide a path for overcurrent devices c. d. Voltage stabilization Which standard prescribes how communications equipment should perform during an earthquake? 5. a. TIA/EIA-569 b. NEC c. TWSS d. NEBS Data transfer rates (internal to the PC) are inversely proportional to clock speed. True or False? 6. a. True b. False The previous network administrator made his own patch cables and crossover cables but did not mark them in any way. How can you tell them apart? 7. Patch cables use two RJ45 connectors, but crossover cables use one RJ45 and one RJ11. a. Pairs 2 and 3 are swapped at one end of a crossover cable Patch cords use only two pairs of a Cat 5 cable, but a crossover cable uses all four b. c. d. Pairs 1 and 4 are swapped at one end of a crossover cable 129

Explanation / Answer

1. True

The fiber cabling is not as secure as stp because STP uses no logical looping which makes it more secure.

2. False.

This is because it consists of noises of two types:

3.True

The reason behind this is that the fiber cables uses the glass is to make the passing of data robust and increase the speed the light travels across a physical network.

4. a. Earthquake Damage Protection

b. Voltage Stabilization

c. Overvoltage protection

This only helps for making these three reasons live. The earthquake protection is served as all the wires are beneath the ground more damage is not done and with the help of the ground current the voltage is stabilized and the protection to overvoltage is provided

5. NEBS

It is Network Equipment Building system.It deals with how should the communication devices must behave when the earthquake appears.

6. False.

The reason is it is directly proportional . As, when you go as closer to the computer or system(internal Pc )Than in the (external devices) the speed increases directly.

7.Patch cords use only two pairs of CAT5 wheras crossover uses four pairs of CAT5

The most easy identifying process is to take both the cables in hands and look for the RJ45 plug if it is pointed away from you it is patch cable and if there are white/green wire in one end followed by white/blue, orange , white/brown , blue, white/blue, green ,white/brown.

8. 802.11 b && 802.11 g

These are the two standards operate upto 54Mbps and are the standards set by IEEE

9. False

The 802.11g is backward compatible with the 802.11b which means that 802.11g AP(Access Points) will work with the 802.11b wireless network adapters and vice versa.

10. MAC Address are easy to intercept on wireless frames

The reason is that the mac addresses are easily interceptable on wireless frames which makes the security inadequate and unreliable.

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Hope it helps....

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