Test your basic knowledge |

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. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (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.
Transport
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
Transport

2. What is the bit length and expression form of a MAC address?
Fiber-opticcable
10101100.00010000.00010100.00110111
The Data Link layer is responsible for the framing of data packets.
48 bits (6 bytes)

3. This layer uses service access points.
The Transport layer segments user data.
00001010.00001011.00001100.01100011
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)

4. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer creates sessions between different hosts' applications.

5. Which layer is represented by packets?
11000000.10101000.00001010.00001111
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Network layer creates packets out of segments handed down from the Transport layer.
204.51.170.85

6. Which of the following are 3 common types of flow control?
Decrease the window size.
Buffering - windowing - congestion avoidance
RJ45 UTP crossover cable.
Segments - packets - frames - bits

7. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Hub
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB
Data - segment - packet - frame - bit

8. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Layer 4
Transport
Data Link
183/B7

9. This device uses hardware addresses to filter a network.
Hub
183/B7
The Data Link layer frames packets received from the Network layer.
Bridge or switch

10. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Bridge or switch
RJ45 UTP crossover cable.
3 - 2 - 1 - none
84:D2:43:B3

11. This device can never run full duplex.
Switch to switch - host to host - switch to host
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.
Hub
The Physical layer is responsible for the electrical and mechanical connections between devices.

12. Convert 10.11.12.99 to binary format.
Switch or bridge
Data Link (LLC sublayer)
00001010.00001011.00001100.01100011
11000000.10101000.00001010.00001111

13. Which two fields are contained within an IEEE Ethernet frame header?
CA:F5:83:EB
Source and destination MAC address and FCS field
Network
The Session layer sets up - maintains - and terminates sessions between applications.

14. Which layer ensures the trustworthy transmission of data across a physical link and is primarily concerned with physical addressing - line discipline - network topology - error notification - ordered delivery of frames - and flow control?
The Network layer provides routing through an internetwork and logical addressing.
00001010.00001011.00001100.01100011
Data Link
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

15. What type of RJ45 UTP cable is used between switches?
Data Link & Physical
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.
RJ45 UTP crossover cable.

16. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
132.210.184.166
Segments - packets - frames - bits
Data Link (LLC sublayer)

17. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
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).
Network
10101100.00010000.00010100.00110111

18. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Data Link
Switch or bridge
The Data Link layer frames packets received from the Network layer.
Hub and repeater

19. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
132.210.184.166
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.
Network

20. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
RJ45 UTP crossover cable.
The Session layer sets up - maintains - and terminates sessions between applications.
The Presentation layer makes sure that data is in a readable format for the Application layer.
To create more collision domains and to add more bandwidth for users.

21. This device sends and receives information about the Network layer.
The Transport layer segments user data.
Decrease the window size.
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
Router

22. Which layer is responsible for keeping the data from different applications separate on the network?

23. Ethernet is defined at these layers.
The Presentation layer makes sure that data is in a readable format for the Application layer.
D8:1B:3D:76
Data Link & Physical
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.

24. Which layer is represented by frames?
Bridge or switch
Transport
The Data Link layer frames packets received from the Network 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.

25. Which layer is used for reliable communication between end nodes over the network and provides mechanisms for establishing - maintaining - and terminating virtual circuits; transport-fault detection recovery; and controlling the flow of information?
Buffering - windowing - congestion avoidance
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Data Link (LLC sublayer)

26. This layer creates a virtual circuit before transmitting between two end stations.
Data Link & Physical
84:D2:43:B3
132.210.184.166
Transport

27. Name three types of connections that can use full duplex.
To provide a means for the receiver to govern the amount of data sent by the sender.
Router
11000000.10101000.00001010.00001111
Switch to switch - host to host - switch to host

28. This device can measure the distance to a remote network.
To create more collision domains and to add more bandwidth for users.
Fiber-opticcable
Router
Source and destination MAC address and FCS field

29. Which layer segments and reassembles data into a data stream?
204.51.170.85
Source and destination MAC address and FCS field
The Data Link layer is responsible for the framing of data packets.
Transport

30. Which layer provides logical addressing that routers will use for path determination?
Segments - packets - frames - bits
The Network layer provides logical addressing - typically IP addressing and routing.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Router

31. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
RJ45 UTP crossover cable.
The Data Link layer is responsible for the framing of data packets.
3 - 2 - 1 - none
10101100.00010000.00010100.00110111

32. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Hub
The Session layer creates sessions between different hosts' applications.
RJ45 UTP rolled cable.
Transport

33. This device creates one big collision domain and one large broadcast domain.
Data Link & Physical
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.
Hub
84:D2:43:B3

34. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Hub and repeater
Router
10101100.00010000.00010100.00110111
132.210.184.166

35. 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?
Decrease the window size.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Source and destination MAC address and FCS field
Buffering - windowing - congestion avoidance

36. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Switch or bridge
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
3 - 2 - 1 - none
198.211.57.209

37. 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.
Data Link & Physical
Fiber-opticcable
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

38. This layer supports flow control and sequencing.
Router
Segments - packets - frames - bits
Transport
Data Link & Physical

39. What are two purposes for segmentation with a bridge?
Data Link & Physical
Hub
To create more collision domains and to add more bandwidth for users.
Transport

40. This device breaks up collision domains and broadcast domains.
Hub
Router
183/B7
The Network layer creates packets out of segments handed down from the Transport layer.

41. At which layer is routing implemented - enabling connections and path selection between two end systems?
Hub
The Network layer provides routing through an internetwork and logical addressing.
132.210.184.166
To create more collision domains and to add more bandwidth for users.

42. Logical addressing is used at this layer.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network
The Network layer provides logical addressing - typically IP addressing and routing.
Hub

43. Name four router functions.
Fiber-opticcable
132.210.184.166
Packet switching - Packet filtering - Internetwork communication - Path selection
10101100.00010000.00010100.00110111

44. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
Data Link
183/B7
198.211.57.209

45. What is the purpose of flow control?
132.210.184.166
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Network
To provide a means for the receiver to govern the amount of data sent by the sender.

46. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Session layer sets up - maintains - and terminates sessions between applications.
132.210.184.166
Layer 4
48 bits (6 bytes)

47. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Network
Layer 4
Router
Switch or bridge

48. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
11000000.10101000.00001010.00001111
198.211.57.209
Router

49. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
Layer 4
Hub and repeater
Router

50. 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.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
00001010.00001011.00001100.01100011
Transport