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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. 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 - segment - packet - frame - bit
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.
Transport

2. Which layer is represented by bits?
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.
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
10101100.00010000.00010100.00110111

3. Which of the following are 3 common types of flow control?
The Data Link layer is responsible for the framing of data packets.
Buffering - windowing - congestion avoidance
Layer 4
Router

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

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

6. This layer creates a virtual circuit before transmitting between two end stations.
Transport
11000000.10101000.00001010.00001111
Hub and repeater
Hub

7. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Buffering - windowing - congestion avoidance
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
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.

8. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
D8:1B:3D:76
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Transport layer segments user data.

9. This device can never run full duplex.
Hub
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Router
Decrease the window size.

10. Which two fields are contained within an IEEE Ethernet frame header?
Transport
132.210.184.166
Source and destination MAC address and FCS field
Bridge or switch

11. This layer uses service access points.
Data Link
The Presentation layer makes sure that data is in a readable format for the Application layer.
Data Link (LLC sublayer)
Hub

12. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
The Network layer creates packets out of segments handed down from the Transport layer.
Hub and repeater
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
Segments - packets - frames - bits

13. Convert 172.16.20.55 to binary format.
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111
The Data Link layer is responsible for the framing of data packets.
204.51.170.85

14. What is the bit length and expression form of a MAC address?
Router
48 bits (6 bytes)
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance

15. This device creates one big collision domain and one large broadcast domain.
The Data Link layer frames packets received from the Network layer.
Source and destination MAC address and FCS field
The Network layer provides routing through an internetwork and logical addressing.
Hub

16. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
Transport
The Network layer provides logical addressing - typically IP addressing and routing.

17. Which layer segments and reassembles data into a data stream?
Transport
The Network layer provides logical addressing - typically IP addressing and routing.
11000000.10101000.00001010.00001111
Switch or bridge

18. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
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
The Physical layer is responsible for the electrical and mechanical connections between devices.
Buffering - windowing - congestion avoidance

19. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Data Link layer frames packets received from the Network layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
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

20. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
The Network layer provides routing through an internetwork and logical addressing.
84:D2:43:B3
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.
CA:F5:83:EB

21. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
3 - 2 - 1 - none
Router
132.210.184.166
Layer 4

22. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Data - segment - packet - frame - bit
Data Link
The Presentation layer makes sure that data is in a readable format for the Application layer.
84:D2:43:B3

23. This device sends and receives information about the Network layer.
Router
Hub and repeater
Fiber-opticcable
RJ45 UTP crossover cable.

24. Which layer is represented by packets?
Switch to switch - host to host - switch to host
84:D2:43:B3
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Network layer creates packets out of segments handed down from the Transport layer.

25. Segmentation of a data stream happens at which layer of the OSI model?
Transport
3 - 2 - 1 - none
Source and destination MAC address and FCS field
Segments - packets - frames - bits

26. This layer supports flow control and sequencing.
84:D2:43:B3
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

27. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
00001010.00001011.00001100.01100011
132.210.184.166
Data Link
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

28. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
The Session layer creates sessions between different hosts' applications.
3 - 2 - 1 - none
Switch to switch - host to host - switch to host

29. Convert 10.11.12.99 to binary format.
Source and destination MAC address and FCS field
Transport
00001010.00001011.00001100.01100011
183/B7

30. When data is encapsulated - which is the correct order?
Data Link & Physical
The Transport layer user virtual circuits to create a reliable connection between two hosts.
D8:1B:3D:76
Data - segment - packet - frame - bit

31. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
To create more collision domains and to add more bandwidth for users.
CA:F5:83:EB
The Physical layer is responsible for the electrical and mechanical connections between devices.

32. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Decrease the window size.
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).
Buffering - windowing - congestion avoidance
3 - 2 - 1 - none

33. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Data Link (LLC sublayer)
Hub and repeater
RJ45 UTP rolled cable.
Transport

34. This device breaks up collision domains and broadcast domains.
Router
Decrease the window size.
Hub
Data Link & Physical

35. Convert 192.168.10.15 to binary format.
Switch to switch - host to host - switch to host
183/B7
The Network layer provides logical addressing - typically IP addressing and routing.
11000000.10101000.00001010.00001111

36. This device can measure the distance to a remote network.
Switch to switch - host to host - switch to host
Router
The Transport layer segments user data.
Buffering - windowing - congestion avoidance

37. Which layer provides logical addressing that routers will use for path determination?
Router
The Network layer provides logical addressing - typically IP addressing and routing.
The Data Link layer is responsible for the framing of data packets.
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.

38. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
The Transport layer user virtual circuits to create a reliable connection between two hosts.
D8:1B:3D:76
Layer 4

39. This device uses hardware addresses to filter a network.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data Link
Bridge or switch
RJ45 UTP crossover cable.

40. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
48 bits (6 bytes)
D8:1B:3D:76
Network
Switch to switch - host to host - switch to host

41. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
183/B7
Network
Network

42. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Session layer creates sessions between different hosts' applications.
183/B7
Decrease the window size.

43. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Transport layer segments user data.
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Data Link layer is responsible for the framing of data packets.
Data Link

44. Which layer is represented by segments?
To create more collision domains and to add more bandwidth for users.
The Transport layer segments user data.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Physical layer is responsible for the electrical and mechanical connections between devices.

45. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Data Link
To create more collision domains and to add more bandwidth for users.
Packet switching - Packet filtering - Internetwork communication - Path selection
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.

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?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
48 bits (6 bytes)

47. Which layer is represented by frames?
3 - 2 - 1 - none
The Data Link layer frames packets received from the Network layer.
To create more collision domains and to add more bandwidth for users.
The Data Link layer is responsible for the framing of data packets.

48. Name four router functions.
To provide a means for the receiver to govern the amount of data sent by the sender.
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link & Physical
Router

49. What are two purposes for segmentation with a bridge?
Router
Hub
To create more collision domains and to add more bandwidth for users.
The Network layer provides routing through an internetwork and logical addressing.

50. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Hub
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).
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.