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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?
Buffering - windowing - congestion avoidance
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub
Segments - packets - frames - bits

2. What is the purpose of flow control?
48 bits (6 bytes)
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.
Decrease the window size.
To provide a means for the receiver to govern the amount of data sent by the sender.

3. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
Router
Router
Hub and repeater

4. 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.
Packet switching - Packet filtering - Internetwork communication - Path selection
84:D2:43:B3
Transport

5. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Layer 4
84:D2:43:B3
10101100.00010000.00010100.00110111
Transport

6. Which layer is represented by packets?
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Fiber-opticcable
The Network layer creates packets out of segments handed down from the Transport layer.

7. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
Decrease the window size.
11000000.10101000.00001010.00001111
Data - segment - packet - frame - bit

8. This device uses hardware addresses to filter a network.
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).
3 - 2 - 1 - none
Bridge or switch
Router

9. This device creates one big collision domain and one large broadcast domain.
Switch or bridge
The Data Link layer frames packets received from the Network layer.
Hub
Switch to switch - host to host - switch to host

10. 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?
Buffering - windowing - congestion avoidance
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.
Source and destination MAC address and FCS field
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

11. 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.
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 Data Link layer is responsible for the framing of data packets.
132.210.184.166

12. This device can never run full duplex.
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection
Hub
The Network layer provides logical addressing - typically IP addressing and routing.

13. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Layer 4
Decrease the window size.
Data Link (LLC sublayer)
204.51.170.85

14. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
The Session layer creates sessions between different hosts' applications.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit
183/B7

15. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides logical addressing - typically IP addressing and routing.
Transport
The Session layer creates sessions between different hosts' applications.

16. Convert 192.168.10.15 to binary format.
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer creates sessions between different hosts' applications.
48 bits (6 bytes)
11000000.10101000.00001010.00001111

17. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Hub and repeater
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub

18. When data is encapsulated - which is the correct order?
132.210.184.166
Transport
Data - segment - packet - frame - bit
RJ45 UTP rolled cable.

19. This device sends and receives information about the Network layer.
3 - 2 - 1 - none
Router
RJ45 UTP rolled cable.
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.

20. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
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.
Source and destination MAC address and FCS field
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

21. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
183/B7
RJ45 UTP crossover cable.
132.210.184.166
Transport

22. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
Data Link
Decrease the window size.
To create more collision domains and to add more bandwidth for users.

23. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
RJ45 UTP rolled cable.
3 - 2 - 1 - none
132.210.184.166
Switch or bridge

24. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Bridge or switch
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
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport

25. Which two fields are contained within an IEEE Ethernet frame header?
Transport
204.51.170.85
Transport
Source and destination MAC address and FCS field

26. This layer supports flow control and sequencing.
Transport
Buffering - windowing - congestion avoidance
Segments - packets - frames - bits
10101100.00010000.00010100.00110111

27. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
48 bits (6 bytes)
204.51.170.85
RJ45 UTP rolled cable.

28. Why does the data communication industry use the layered OSI reference model? (Name two)
RJ45 UTP crossover cable.
00001010.00001011.00001100.01100011
The Session layer sets up - maintains - and terminates sessions between applications.
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.

29. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
D8:1B:3D:76
84:D2:43:B3
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

30. Which layer is represented by segments?
204.51.170.85
The Transport layer segments user data.
The Network layer provides routing through an internetwork and logical addressing.
RJ45 UTP rolled cable.

31. Ethernet is defined at these layers.
Data Link & Physical
The Data Link layer frames packets received from the Network layer.
Layer 4
Decrease the window size.

32. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Hub and repeater
132.210.184.166
D8:1B:3D:76
Router

33. This layer creates a virtual circuit before transmitting between two end stations.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Session layer sets up - maintains - and terminates sessions between applications.
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.

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

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35. Which of the following are 3 common types of flow control?
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.
Buffering - windowing - congestion avoidance
The Network layer creates packets out of segments handed down from the Transport layer.
Transport

36. At which layer is routing implemented - enabling connections and path selection between two end systems?
CA:F5:83:EB
198.211.57.209
The Network layer provides routing through an internetwork and logical addressing.
The Data Link layer is responsible for the framing of data packets.

37. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
183/B7
The Data Link layer frames packets received from the Network layer.
Network

38. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Hub
RJ45 UTP crossover cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Switch or bridge

39. Which layer segments and reassembles data into a data stream?
Data Link (LLC sublayer)
Hub
Transport
Network

40. 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.
RJ45 UTP crossover cable.
To provide a means for the receiver to govern the amount of data sent by the sender.
D8:1B:3D:76

41. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
10101100.00010000.00010100.00110111
To create more collision domains and to add more bandwidth for users.
198.211.57.209

42. This device breaks up collision domains and broadcast domains.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router
The Data Link layer is responsible for the framing of data packets.
84:D2:43:B3

43. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
RJ45 UTP rolled cable.
Switch to switch - host to host - switch to host
CA:F5:83:EB
Network

44. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
To create more collision domains and to add more bandwidth for users.
Router
Source and destination MAC address and FCS field
CA:F5:83:EB

45. 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.
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.

46. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
RJ45 UTP crossover cable.
Decrease the window size.
Hub and repeater

47. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Switch to switch - host to host - switch to host
Fiber-opticcable
Transport
11000000.10101000.00001010.00001111

48. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Router
Data Link
Layer 4
To provide a means for the receiver to govern the amount of data sent by the sender.

49. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Hub
Transport
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
198.211.57.209

50. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Data Link layer frames packets received from the Network layer.
The Network layer provides logical addressing - typically IP addressing and routing.
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.
Data Link (LLC sublayer)