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Cisco Prep

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Why does the data communication industry use the layered OSI reference model? (Name two)
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
Router
Network
The Data Link layer is responsible for the framing of data packets.

2. At which layer is routing implemented - enabling connections and path selection between two end systems?
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
The Network layer provides routing through an internetwork and logical addressing.
Segments - packets - frames - bits

3. Logical addressing is used at this layer.
Router
The Session layer sets up - maintains - and terminates sessions between applications.
Network
The Transport layer segments user data.

4. Convert 192.168.10.15 to binary format.
RJ45 UTP rolled cable.
11000000.10101000.00001010.00001111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Network

5. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
198.211.57.209
To provide a means for the receiver to govern the amount of data sent by the sender.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
The Network layer provides logical addressing - typically IP addressing and routing.

6. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub
RJ45 UTP crossover cable.

7. Which layer segments and reassembles data into a data stream?
Hub
Transport
The Session layer sets up - maintains - and terminates sessions between applications.
Packet switching - Packet filtering - Internetwork communication - Path selection

8. Which two fields are contained within an IEEE Ethernet frame header?
198.211.57.209
Source and destination MAC address and FCS field
Bridge or switch
Layer 4

9. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
3 - 2 - 1 - none
Data - segment - packet - frame - bit
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.

10. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Source and destination MAC address and FCS field
48 bits (6 bytes)
Transport

11. Ethernet is defined at these layers.
Data Link & Physical
Router
00001010.00001011.00001100.01100011
The Presentation layer makes sure that data is in a readable format for the Application layer.

12. This device can measure the distance to a remote network.
D8:1B:3D:76
Transport
Network
Router

13. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
Transport
84:D2:43:B3
Router

14. Which layer is represented by bits?
204.51.170.85
Buffering - windowing - congestion avoidance
10101100.00010000.00010100.00110111
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

15. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer is responsible for the framing of data packets.
204.51.170.85
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Network layer provides routing through an internetwork and logical addressing.

16. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
183/B7
To create more collision domains and to add more bandwidth for users.
Data Link
Network

17. What is the purpose of flow control?
Transport
Buffering - windowing - congestion avoidance
Data Link & Physical
To provide a means for the receiver to govern the amount of data sent by the sender.

18. Segmentation of a data stream happens at which layer of the OSI model?
Data - segment - packet - frame - bit
Data Link
132.210.184.166
Transport

19. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB
204.51.170.85
The Network layer creates packets out of segments handed down from the Transport layer.

20. This layer supports flow control and sequencing.
Transport
Data Link
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Buffering - windowing - congestion avoidance

21. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
48 bits (6 bytes)
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Presentation layer makes sure that data is in a readable format for the Application layer.

22. Which layer is represented by segments?
The Transport layer segments user data.
Data Link (LLC sublayer)
204.51.170.85
198.211.57.209

23. Name four router functions.
Data Link & Physical
D8:1B:3D:76
Data - segment - packet - frame - bit
Packet switching - Packet filtering - Internetwork communication - Path selection

24. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
RJ45 UTP rolled cable.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

25. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
Data Link (LLC sublayer)
10101100.00010000.00010100.00110111
Transport

26. When data is encapsulated - which is the correct order?
Switch or bridge
To create more collision domains and to add more bandwidth for users.
CA:F5:83:EB
Data - segment - packet - frame - bit

27. This device can never run full duplex.
Hub
The Data Link layer is responsible for the framing of data packets.
3 - 2 - 1 - none
Buffering - windowing - congestion avoidance

28. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
RJ45 UTP rolled cable.

29. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
48 bits (6 bytes)
Switch to switch - host to host - switch to host
198.211.57.209

30. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
11000000.10101000.00001010.00001111
To provide a means for the receiver to govern the amount of data sent by the sender.
Layer 4

31. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
3 - 2 - 1 - none
Transport
11000000.10101000.00001010.00001111

32. This device sends and receives information about the Network layer.
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
Router
Decrease the window size.
Hub and repeater

33. This device creates one big collision domain and one large broadcast domain.
Data Link
Hub
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
D8:1B:3D:76

34. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB
RJ45 UTP rolled cable.

35. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
D8:1B:3D:76
Fiber-opticcable
Switch to switch - host to host - switch to host

36. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
D8:1B:3D:76
Transport
RJ45 UTP rolled cable.

37. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.
Layer 4
The Network layer provides routing through an internetwork and logical addressing.

38. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
132.210.184.166
The Transport layer user virtual circuits to create a reliable connection between two hosts.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra

39. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
To create more collision domains and to add more bandwidth for users.
Source and destination MAC address and FCS field
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.

40. Convert 10.11.12.99 to binary format.
The Data Link layer frames packets received from the Network layer.
00001010.00001011.00001100.01100011
Hub
The Network layer creates packets out of segments handed down from the Transport layer.

41. What is the bit length and expression form of a MAC address?
CA:F5:83:EB
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
Bridge or switch
48 bits (6 bytes)

42. Name three types of connections that can use full duplex.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
183/B7
Switch to switch - host to host - switch to host
Network

43. This layer uses service access points.
The Application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses).
Data Link (LLC sublayer)
Segments - packets - frames - bits
Transport

44. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
183/B7
The Network layer creates packets out of segments handed down from the Transport layer.
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.

45. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
CA:F5:83:EB
Switch to switch - host to host - switch to host
204.51.170.85
Source and destination MAC address and FCS field

46. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
84:D2:43:B3
Data Link (LLC sublayer)
The Data Link layer frames packets received from the Network layer.

47. Which layer chooses and determines the availability of communicating partners along with the resources necessary to make the connection - coordinates partnering applications - and forms a consensus on procedures for controlling data integrity and err
The Application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses).
132.210.184.166
Buffering - windowing - congestion avoidance
Source and destination MAC address and FCS field

48. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
204.51.170.85
To provide a means for the receiver to govern the amount of data sent by the sender.
183/B7

49. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub and repeater
Segments - packets - frames - bits

50. Which layer is responsible for creating - managing - and terminating sessions between applications?
Switch or bridge
The Session layer sets up - maintains - and terminates sessions between applications.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Data Link layer is responsible for the framing of data packets.