LAN Switching and Wireless

671. What is the last address of a block of classless addresses if one of the addresses is 12.2.2.127/28?

1. 12.2.2.16
2. 12.2.2.112
3. 12.2.2.127
4. none of the above

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672. What is the last address of a block of classless addresses if one of the addresses is 12.2.2.6/30?

1. 12.2.2.2
2. 12.2.2.6
3. 12.2.2.7
4. none of the above

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673. What is the major factor that makes coaxial cable less susceptible to noise than twisted-pair cable?

1. inner conductor
2. diameter of cable
3. outer conductor
4. insulating material

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674. What is the result of ANDing 0 and 15?

1. 255
2. 15
3. 0
4. none of the above

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675. What is the result of ANDing 192 and 65?

1. 192
2. 65
3. 64
4. none of the above

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676. What is the result of ANDing 254 and 15?

1. 254
2. 14
3. 0
4. none of the above

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677. What is the result of ANDing 255 and 15?

1. 255
2. 15
3. 0
4. none of the above

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678. When a beam of light travels through media of two different densities, if the angle of incidence is greater than the critical angle, _________ occurs.

1. reflection
2. refraction
3. incidence
4. criticism

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679. When a host on network A sends a message to a host on network B, which address does the router look at?

1. port
2. logical
3. physical
4. none of the above

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680. When data are transmitted from device A to device B, the header from A's layer 4 is read by B's _________ layer.

1. Physical
2. Transport
3. Application
4. None of the above

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