10.2

Question 1

What are two benefits of using a layered network model? (Choose two.)
 It assists in protocol design.
 It speeds up packet delivery.
 It prevents designers from creating their own model.
 It prevents technology in one layer from affecting other layers.
 It ensures a device at one layer can function at the next higher layer.

Answer 1

 It assists in protocol design. *

 It prevents technology in one layer from affecting other layers.*

Question 2

Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)
	data link
	network
	physical
	session
	transport

Answer 2

 network*

 transport*

Question 3

Which name is assigned to the transport layer PDU?
	bits
	data
	frame
	packet
	segment

Answer 3

 segment*

Question 4

A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
 the amount of traffic that is currently crossing the network
 the sophistication of the encapsulation method applied to the data
 the type of traffic that is crossing the network
 the latency that is created by the number of network devices that the data is crossing
 the bandwidth of the WAN connection to the Internet
 the reliability of the gigabit Ethernet infrastructure of the backbone

Answer 4

 the amount of traffic that is currently crossing the network*
 the type of traffic that is crossing the network*
 the latency that is created by the number of network devices that the data is crossing*

Question 5

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?
	presentation layer
	network layer
	physical layer
	data link layer

Answer 5

 physical layer*

Question 6

Which type of UTP cable is used to connect a PC to a switch port?
	console
	rollover
	crossover
	straight-through

Answer 6

 straight-through**

Question 7

A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
 the amount of traffic that is currently crossing the network
 the sophistication of the encapsulation method applied to the data
 the type of traffic that is crossing the network
 the latency that is created by the number of network devices that the data is crossing
 the bandwidth of the WAN connection to the Internet
 the reliability of the gigabit Ethernet infrastructure of the backbone

Answer 7

 the amount of traffic that is currently crossing the network*
 the type of traffic that is crossing the network *
 the latency that is created by the number of network devices that the data is crossing*

Question 8

What is a characteristic of UTP cabling?
	cancellation
	cladding
	immunity to electrical hazards
	woven copper braid or metallic foil

Answer 8

 cancellation*

Question 9

What are two characteristics of fiber-optic cable? (Choose two.)
 It is not affected by EMI or RFI.
 Each pair of cables is wrapped in metallic foil.
 It combines the technique of cancellation, shielding, and twisting to protect data.
 It typically contains 4 pairs of fiber-optic wires.
 It is more expensive than UTP cabling is.

Answer 9

 It is not affected by EMI or RFI.*

 It is more expensive than UTP cabling is.*

Question 10

What is a characteristic of the LLC sublayer?
 It provides the logical addressing required that identifies the device.
 It provides delimitation of data according to the physical signaling requirements of the medium.
 It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
 It defines software processes that provide services to the physical layer.

Answer 10

 It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.*