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. What type of RJ45 UTP cable is used between switches?
Fiber-opticcable
RJ45 UTP crossover cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

2. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub and repeater
The Transport layer segments user data.

3. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Session layer creates sessions between different hosts' applications.
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.
Packet switching - Packet filtering - Internetwork communication - Path selection

4. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Segments - packets - frames - bits

5. 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?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
To create more collision domains and to add more bandwidth for users.
Network
Network

6. Ethernet is defined at these layers.
Data Link & Physical
Hub
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.
Network

7. Which layer segments and reassembles data into a data stream?
Data Link (LLC sublayer)
Data - segment - packet - frame - bit
Hub
Transport

8. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Switch or bridge
198.211.57.209
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.

9. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
198.211.57.209
The Data Link layer is responsible for the framing of data packets.
RJ45 UTP crossover cable.

10. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Session layer sets up - maintains - and terminates sessions between applications.
D8:1B:3D:76
Layer 4
Router

11. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Network layer provides routing through an internetwork and logical addressing.
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
84:D2:43:B3

12. This device uses hardware addresses to filter a network.
00001010.00001011.00001100.01100011
Switch to switch - host to host - switch to host
Decrease the window size.
Bridge or switch

13. Which layer is represented by frames?
The Data Link layer is responsible for the framing of data packets.
The Network layer creates packets out of segments handed down from the Transport layer.
The Data Link layer frames packets received from the Network layer.
3 - 2 - 1 - none

14. This layer creates a virtual circuit before transmitting between two end stations.
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
Segments - packets - frames - bits
Source and destination MAC address and FCS field

15. Which layer is represented by packets?
D8:1B:3D:76
Network
Data Link (LLC sublayer)
The Network layer creates packets out of segments handed down from the Transport layer.

16. 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
D8:1B:3D:76
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
The Network layer creates packets out of segments handed down from the Transport layer.

17. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
3 - 2 - 1 - none
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.
Source and destination MAC address and FCS field

18. Convert 172.16.20.55 to binary format.
3 - 2 - 1 - none
The Session layer sets up - maintains - and terminates sessions between applications.
D8:1B:3D:76
10101100.00010000.00010100.00110111

19. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
To provide a means for the receiver to govern the amount of data sent by the sender.
RJ45 UTP rolled cable.
The Transport layer segments user data.
The Physical layer is responsible for the electrical and mechanical connections between devices.

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

21. Segmentation of a data stream happens at which layer of the OSI model?
Transport
204.51.170.85
The Network layer provides logical addressing - typically IP addressing and routing.
198.211.57.209

22. Which layer provides logical addressing that routers will use for path determination?
Layer 4
The Network layer provides logical addressing - typically IP addressing and routing.
RJ45 UTP crossover cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.

23. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Router
3 - 2 - 1 - none
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

24. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
11000000.10101000.00001010.00001111
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.
183/B7
The Presentation layer makes sure that data is in a readable format for the Application layer.

25. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Switch or bridge
CA:F5:83:EB
84:D2:43:B3
Transport

26. This device can never run full duplex.
Source and destination MAC address and FCS field
183/B7
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub

27. Which two fields are contained within an IEEE Ethernet frame header?
Fiber-opticcable
183/B7
Source and destination MAC address and FCS field
Transport

28. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Transport
Data Link & Physical
Bridge or switch
132.210.184.166

29. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Transport
Transport
84:D2:43:B3
The Data Link layer is responsible for the framing of data packets.

30. Why does the data communication industry use the layered OSI reference model? (Name two)
The Network layer creates packets out of segments handed down from the Transport layer.
To create more collision domains and to add more bandwidth for users.
The Presentation layer makes sure that data is in a readable format for the Application 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.

31. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
10101100.00010000.00010100.00110111
D8:1B:3D:76
The Data Link layer is responsible for the framing of data packets.
The Network layer provides logical addressing - typically IP addressing and routing.

32. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
RJ45 UTP rolled cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Data Link
D8:1B:3D:76

33. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
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.
To create more collision domains and to add more bandwidth for users.
Fiber-opticcable
RJ45 UTP rolled cable.

34. Logical addressing is used at this layer.
Buffering - windowing - congestion avoidance
00001010.00001011.00001100.01100011
Transport
Network

35. This device can measure the distance to a remote network.
Router
The Network layer provides logical addressing - typically IP addressing and routing.
204.51.170.85
Layer 4

36. Convert 192.168.10.15 to binary format.
D8:1B:3D:76
Router
11000000.10101000.00001010.00001111
The Presentation layer makes sure that data is in a readable format for the Application layer.

37. 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
Fiber-opticcable

38. Name three types of connections that can use full duplex.
Layer 4
Transport
Hub
Switch to switch - host to host - switch to host

39. This layer uses service access points.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data - segment - packet - frame - bit
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Data Link (LLC sublayer)

40. 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.
D8:1B:3D:76
Transport
Hub and repeater

41. What is the bit length and expression form of a MAC address?
10101100.00010000.00010100.00110111
48 bits (6 bytes)
D8:1B:3D:76
To provide a means for the receiver to govern the amount of data sent by the sender.

42. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
3 - 2 - 1 - none
183/B7
198.211.57.209
Router

43. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
The Network layer provides logical addressing - typically IP addressing and routing.
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).
The Network layer creates packets out of segments handed down from the Transport layer.

44. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Switch or bridge
Network
Segments - packets - frames - bits
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. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Decrease the window size.
183/B7
Layer 4
The Data Link layer frames packets received from the Network layer.

46. 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?
Transport
Data Link & Physical
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Session layer sets up - maintains - and terminates sessions between applications.

47. This device breaks up collision domains and broadcast domains.
Transport
Hub
Router
3 - 2 - 1 - none

48. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
The Transport layer segments user data.
The Network layer provides routing through an internetwork and logical addressing.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

49. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Session layer sets up - maintains - and terminates sessions between applications.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Network layer provides routing through an internetwork and logical addressing.

50. This device sends and receives information about the Network layer.
Layer 4
Hub and repeater
Router
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.