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1. For each item below, assign a layer from the five-layer Internet Model that t

ID: 3575760 • Letter: 1

Question

1. For each item below, assign a layer from the five-layer Internet Model that the item primarily operates at.

Switch                                          a. Layer 1

x.25 packet layer                          b. Layer 2

TCP                                             C. Layer 3

ICMP                                             D. Layer 4

UDP                                               E. Layer 5

Repeater

AMI Line Code

SLIP

2. Match the terms with their most appropriate option.

Arrival of multiple components of a signal take more time than the transmission of those components.

B. A minor impairment to a signal introduced when it is converted from analog form to digital form.

C. Degradation of a signal that occurs when two consecutive signals overlap upon their arrival.

D. A signal impairment that results from the reception of another intended transmission at the same time.

E. Signal degradation that might be due to electromagnetic emanations from such sources as firing spark plugs or lightning strikes.

3. Determine the best match for the items below.

Bit Substitution         A. False flag Avoidance

Bit Robbing              B. Zero Avoidance

Bit Stuffing                C. Control signaling

4. Match the IP address and mask pairs with their types.

IP Address 202.0.18.63 using mask 255.255.255.192                 A. A host on the 9th useable subnet.

IP address 123.45.67.89 using mask 255.255.255.248                B. A subnet broadcast address.

IP Address 172.16.37.13 using mask 255.255.252.0                    C. A subnet's network address.

IP Address 10.3.0.34 using mask 255.255.255.240                       D. First useable host on the subnet.

5. What is the minimum size of an IP datagram in octets (your answer should be an integer with no units, spaces, commas or even a decimal point)?

6. What is the dotted decimal IP address for 00010100 00101000 01010000 10100000 (use dots, but no spaces in your answer)?

7. What binary classful network mask would be used with class B addresses (answer in binary with no dots or spaces)?

8. What is the IP address of the 61st useable host on the sixth useable subnetwork when subnetting the 172.16.0.0 network by borrowing 6 bits? Provide your answer as a 32 bit binary number, with no spaces or dots.

9. What type of IP address is 172.16.10.0 when a class B mask is used?

a. A network address

b. A host address.

c. A broadcast address.

d. A subnet mask.

10. What network does the following host address belong to (no subnetting in this case): 10100100 00101011 11000011 11101010

a. 164.43.0.0

b. 164.43.195.0

c. 144.43.0.0

d. 144.43.195.0

Delay Distortion                        A.

Arrival of multiple components of a signal take more time than the transmission of those components.

Delay Spead

B. A minor impairment to a signal introduced when it is converted from analog form to digital form.

Quantization Error

C. Degradation of a signal that occurs when two consecutive signals overlap upon their arrival.

Impulse Noise

D. A signal impairment that results from the reception of another intended transmission at the same time.

Interference

E. Signal degradation that might be due to electromagnetic emanations from such sources as firing spark plugs or lightning strikes.

Explanation / Answer

1)

2)

3)

4)

5)the minimum size of an IP datagram in octets is 20 bytes

6)00010100 00101000 01010000 10100000

00010100 00101000 01010000 10100000

= 20 40 80 160

So dotted decimal notation for the above is 20.40.80.160

10) The following host address 10100100 00101011 11000011 11101010 belongs to b.164.43.195.0