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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 segments and reassembles data into a data stream?
183/B7
The Physical layer is responsible for the electrical and mechanical connections between devices.
Network
Transport

2. 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?
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.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
3 - 2 - 1 - none
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.

3. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Hub
The Network layer provides logical addressing - typically IP addressing and routing.
Router
Switch or bridge

4. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
11000000.10101000.00001010.00001111
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Network

5. Convert 172.16.20.55 to binary format.
Source and destination MAC address and FCS field
To create more collision domains and to add more bandwidth for users.
84:D2:43:B3
10101100.00010000.00010100.00110111

6. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
00001010.00001011.00001100.01100011
Switch or bridge
Transport

7. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Network
Hub and repeater
To create more collision domains and to add more bandwidth for users.
204.51.170.85

8. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
The Session layer sets up - maintains - and terminates sessions between applications.
Segments - packets - frames - bits
Network
Hub and repeater

9. Logical addressing is used at this layer.
Network
Segments - packets - frames - bits
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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.

10. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
132.210.184.166
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
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.

11. This layer creates a virtual circuit before transmitting between two end stations.
Decrease the window size.
Buffering - windowing - congestion avoidance
00001010.00001011.00001100.01100011
Transport

12. This device uses hardware addresses to filter a network.
To create more collision domains and to add more bandwidth for users.
The Network layer provides logical addressing - typically IP addressing and routing.
Bridge or switch
204.51.170.85

13. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Switch or bridge
To create more collision domains and to add more bandwidth for users.
Hub and repeater
The Network layer provides logical addressing - typically IP addressing and routing.

14. This device can never run full duplex.
11000000.10101000.00001010.00001111
Transport
Hub
The Data Link layer frames packets received from the Network layer.

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

16. Ethernet is defined at these layers.
Fiber-opticcable
Transport
Router
Data Link & Physical

17. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
Packet switching - Packet filtering - Internetwork communication - Path selection
D8:1B:3D:76
The Transport layer segments user data.

18. Convert 192.168.10.15 to binary format.
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.
48 bits (6 bytes)
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

19. 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.
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link (LLC sublayer)
The Data Link layer frames packets received from the Network layer.

20. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Hub
198.211.57.209
The Data Link layer is responsible for the framing of data packets.

21. 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
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.
Network

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

23. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Bridge or switch
The Network layer provides logical addressing - typically IP addressing and routing.
D8:1B:3D:76
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.

24. 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?
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).
Decrease the window size.
204.51.170.85
The Session layer creates sessions between different hosts' applications.

25. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Switch to switch - host to host - switch to host
The Data Link layer is responsible for the framing of data packets.
Packet switching - Packet filtering - Internetwork communication - Path selection
Hub

26. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Transport
CA:F5:83:EB
RJ45 UTP rolled cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.

27. What is the purpose of flow control?
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
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.
The Network layer creates packets out of segments handed down from the Transport layer.

28. This device sends and receives information about the Network layer.
D8:1B:3D:76
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Router
The Session layer sets up - maintains - and terminates sessions between applications.

29. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
Network
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 Presentation layer makes sure that data is in a readable format for the Application layer.

30. Which of the following are 3 common types of flow control?
Fiber-opticcable
Buffering - windowing - congestion avoidance
Data Link
To create more collision domains and to add more bandwidth for users.

31. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Data - segment - packet - frame - bit
84:D2:43:B3
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.

32. What are two purposes for segmentation with a bridge?
Fiber-opticcable
The Data Link layer frames packets received from the Network layer.
To create more collision domains and to add more bandwidth for users.
Transport

33. This layer uses service access points.
Segments - packets - frames - bits
Data Link (LLC sublayer)
10101100.00010000.00010100.00110111
The Network layer provides logical addressing - typically IP addressing and routing.

34. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Session layer creates sessions between different hosts' applications.
The Session layer sets up - maintains - and terminates sessions between applications.
The Network layer creates packets out of segments handed down from the Transport layer.
Packet switching - Packet filtering - Internetwork communication - Path selection

35. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
10101100.00010000.00010100.00110111
RJ45 UTP crossover cable.
Hub and repeater

36. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
The Network layer creates packets out of segments handed down from the Transport layer.
183/B7
RJ45 UTP crossover cable.
Hub and repeater

37. Which layer is represented by segments?
Data - segment - packet - frame - bit
The Transport layer segments user data.
Decrease the window size.
RJ45 UTP crossover cable.

38. This device can measure the distance to a remote network.
Transport
48 bits (6 bytes)
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router

39. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
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
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.

40. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Bridge or switch
11000000.10101000.00001010.00001111
Hub and repeater
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.

41. This layer supports flow control and sequencing.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
Switch to switch - host to host - switch to host
Hub

42. This device creates one big collision domain and one large broadcast domain.
Hub
183/B7
Transport
Segments - packets - frames - bits

43. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
Network

44. Segmentation of a data stream happens at which layer of the OSI model?
The Network layer provides routing through an internetwork and logical addressing.
To provide a means for the receiver to govern the amount of data sent by the sender.
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

45. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
183/B7
Router
Hub

46. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Switch or bridge
204.51.170.85
Hub and repeater
Network

47. 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?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
132.210.184.166
Hub
00001010.00001011.00001100.01100011

48. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Network layer creates packets out of segments handed down from the Transport layer.
Transport
Buffering - windowing - congestion avoidance
Data Link

49. This device breaks up collision domains and broadcast domains.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Switch to switch - host to host - switch to host
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

50. Name three types of connections that can use full duplex.
Data Link (LLC sublayer)
Router
Switch to switch - host to host - switch to host
The Transport layer segments user data.