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Computer Networking

Computer Networking
What two multicast addresses does OSPFv3 use?1. FF02::A2. FF02::93. FF02::54. FF02::6

3 and 4
3 only
1 and 3
2 only

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Computer Networking
With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?

248
224
252
240
192

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Computer Networking
Which of the following would be good reasons to run NAT?1. You need to connect to the Internet and your hosts don't have globally unique IP addresses.2. You change to a new ISP that requires you to renumber your network.3. You don't want any hosts connecting to the Internet.4. You require two intranets with duplicate addresses to merge.

1, 2 and 4
2 and 4
All of these
3 only

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Computer Networking
The core diameter of a single-mode fibers is about

10 times the fiber radius
7 times the light carried in the fiber
None of these
3 times the wavelength of the light carried in the fiber
10 times the wavelength of the light carried in the fiber

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Computer Networking
What is the maximum distance running the lowest data rate for 802.11g?

About 100 feet
About 175 feet
About 350 feet
About 300 feet

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Computer Networking
Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?

Frequency-shift keying
Frequency modulation
None of these
Amplitude modulation
Frequency-division multiple access

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