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. Which layer provides logical addressing that routers will use for path determination?
84:D2:43:B3
Network
The Network layer provides logical addressing - typically IP addressing and routing.
48 bits (6 bytes)

2. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
84:D2:43:B3
CA:F5:83:EB
204.51.170.85
The Data Link layer frames packets received from the Network layer.

3. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
00001010.00001011.00001100.01100011
The Data Link layer is responsible for the framing of data packets.
204.51.170.85
Segments - packets - frames - bits

4. What is the bit length and expression form of a MAC address?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
48 bits (6 bytes)
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 takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.

5. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
10101100.00010000.00010100.00110111
RJ45 UTP rolled cable.
Switch to switch - host to host - switch to host
132.210.184.166

6. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Source and destination MAC address and FCS field
Segments - packets - frames - bits
10101100.00010000.00010100.00110111
RJ45 UTP rolled cable.

7. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
Decrease the window size.
Transport
The Network layer creates packets out of segments handed down from the Transport layer.

8. Which layer is represented by segments?
The Transport layer segments user data.
00001010.00001011.00001100.01100011
CA:F5:83:EB
Router

9. 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.
The Session layer creates sessions between different hosts' applications.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
00001010.00001011.00001100.01100011

10. Name three types of connections that can use full duplex.
Transport
RJ45 UTP crossover cable.
D8:1B:3D:76
Switch to switch - host to host - switch to host

11. 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.
11000000.10101000.00001010.00001111
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.

12. This device uses hardware addresses to filter a network.
Bridge or switch
Hub
Data Link & Physical
CA:F5:83:EB

13. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
Hub
3 - 2 - 1 - none
The Network layer provides routing through an internetwork and logical addressing.

14. 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 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
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 Physical layer is responsible for transporting 1s and 0s in a digital signal.

15. Which of the following are 3 common types of flow control?
Switch to switch - host to host - switch to host
Buffering - windowing - congestion avoidance
Transport
Data Link

16. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Network layer provides routing through an internetwork and logical addressing.
Hub
Data Link (LLC sublayer)
3 - 2 - 1 - none

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

18. 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.
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.
Router

19. This device creates many smaller collision domains - but the network is still one large broadcast domain.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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).
204.51.170.85
Switch or bridge

20. Convert 192.168.10.15 to binary format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
D8:1B:3D:76
The Data Link layer frames packets received from the Network layer.
11000000.10101000.00001010.00001111

21. What is the purpose of flow control?
D8:1B:3D:76
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
Decrease the window size.
To provide a means for the receiver to govern the amount of data sent by the sender.

22. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Layer 4
11000000.10101000.00001010.00001111
Fiber-opticcable
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

23. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Data Link layer frames packets received from the Network layer.
Bridge or switch
The Session layer sets up - maintains - and terminates sessions between applications.
Switch or bridge

24. Name four router functions.
Hub
Decrease the window size.
Packet switching - Packet filtering - Internetwork communication - Path selection
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).

25. This device breaks up collision domains and broadcast domains.
Hub
Bridge or switch
Network
Router

26. This device can measure the distance to a remote network.
The Session layer creates sessions between different hosts' applications.
Buffering - windowing - congestion avoidance
The Data Link layer frames packets received from the Network layer.
Router

27. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
132.210.184.166
10101100.00010000.00010100.00110111
D8:1B:3D:76
To provide a means for the receiver to govern the amount of data sent by the sender.

28. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Bridge or switch
Transport
The Presentation layer makes sure that data is in a readable format for the Application layer.
D8:1B:3D:76

29. Why does the data communication industry use the layered OSI reference model? (Name two)
10101100.00010000.00010100.00110111
Hub and repeater
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

30. This layer supports flow control and sequencing.
Hub
The Network layer provides logical addressing - typically IP addressing and routing.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

31. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
To provide a means for the receiver to govern the amount of data sent by the sender.
Data Link & Physical

32. Which layer is represented by frames?
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 Data Link layer frames packets received from the Network layer.
The Session layer sets up - maintains - and terminates sessions between applications.
D8:1B:3D:76

33. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
RJ45 UTP crossover cable.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Layer 4
Hub

34. This layer uses service access points.
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
84:D2:43:B3
Hub
Data Link (LLC sublayer)

35. This device can never run full duplex.
00001010.00001011.00001100.01100011
Data Link & Physical
Hub
To create more collision domains and to add more bandwidth for users.

36. Logical addressing is used at this layer.
Network
Transport
The Data Link layer frames packets received from the Network layer.
204.51.170.85

37. This layer creates a virtual circuit before transmitting between two end stations.
Transport
Hub
198.211.57.209
RJ45 UTP crossover cable.

38. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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
198.211.57.209
3 - 2 - 1 - none
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

39. Which layer is represented by bits?
Transport
To create more collision domains and to add more bandwidth for users.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Hub

40. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
The Presentation layer makes sure that data is in a readable format for the Application layer.
RJ45 UTP crossover 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

41. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
204.51.170.85
Source and destination MAC address and FCS field
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.
The Data Link layer is responsible for the framing of data packets.

42. What type of RJ45 UTP cable is used between switches?
To provide a means for the receiver to govern the amount of data sent by the sender.
RJ45 UTP crossover cable.
132.210.184.166
D8:1B:3D:76

43. 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.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub and repeater
RJ45 UTP crossover cable.

44. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Transport
RJ45 UTP rolled cable.
Hub and repeater
Data Link (LLC sublayer)

45. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
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).
183/B7
3 - 2 - 1 - none
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

46. Which layer segments and reassembles data into a data stream?
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport
11000000.10101000.00001010.00001111
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

47. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
The Network layer creates packets out of segments handed down from the Transport layer.
CA:F5:83:EB
Data Link & Physical
Network

48. 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?
Data Link (LLC sublayer)
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.
RJ45 UTP crossover cable.

49. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Data Link (LLC sublayer)
84:D2:43:B3
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).
Transport

50. When data is encapsulated - which is the correct order?
Router
Router
Hub
Data - segment - packet - frame - bit