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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 responsible for converting data packets from the Data Link layer into electrical signals?
Fiber-opticcable
Hub and repeater
Bridge or switch
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.

2. This layer uses service access points.
Fiber-opticcable
Data Link (LLC sublayer)
Switch or bridge
RJ45 UTP rolled cable.

3. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
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
11000000.10101000.00001010.00001111
The Data Link layer is responsible for the framing of data packets.
Data Link & Physical

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

5. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
132.210.184.166
To create more collision domains and to add more bandwidth for users.
The Network layer creates packets out of segments handed down from the Transport layer.
CA:F5:83:EB

6. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

7. Which of the following are 3 common types of flow control?
The Network layer provides routing through an internetwork and logical addressing.
48 bits (6 bytes)
183/B7
Buffering - windowing - congestion avoidance

8. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
132.210.184.166
RJ45 UTP crossover cable.
48 bits (6 bytes)

9. Why does the data communication industry use the layered OSI reference model? (Name two)
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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.
204.51.170.85

10. Logical addressing is used at this layer.
Hub and repeater
Network
132.210.184.166
The Network layer creates packets out of segments handed down from the Transport layer.

11. Which layer is represented by bits?
Router
Data Link
The Session layer sets up - maintains - and terminates sessions between applications.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

12. 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.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Source and destination MAC address and FCS field
To provide a means for the receiver to govern the amount of data sent by the sender.

13. 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?
Transport
RJ45 UTP crossover cable.
Network
Decrease the window size.

14. This layer creates a virtual circuit before transmitting between two end stations.
11000000.10101000.00001010.00001111
RJ45 UTP rolled cable.
Network
Transport

15. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
Transport
Data Link (LLC sublayer)
To create more collision domains and to add more bandwidth for users.

16. Ethernet is defined at these layers.
Data Link & Physical
Data Link (LLC sublayer)
11000000.10101000.00001010.00001111
Switch or bridge

17. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Network
204.51.170.85
D8:1B:3D:76
Switch to switch - host to host - switch to host

18. Segmentation of a data stream happens at which layer of the OSI model?
Switch to switch - host to host - switch to host
11000000.10101000.00001010.00001111
Data Link (LLC sublayer)
Transport

19. When data is encapsulated - which is the correct order?
RJ45 UTP rolled cable.
Layer 4
Data - segment - packet - frame - bit
The Transport layer segments user data.

20. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Session layer sets up - maintains - and terminates sessions between applications.
The Session layer creates sessions between different hosts' applications.
The Network layer provides routing through an internetwork and logical addressing.
00001010.00001011.00001100.01100011

21. Which layer provides logical addressing that routers will use for path determination?
Fiber-opticcable
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 provides logical addressing - typically IP addressing and routing.
Packet switching - Packet filtering - Internetwork communication - Path selection

22. Which layer is represented by packets?
The Network layer provides routing through an internetwork and logical addressing.
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.
The Network layer creates packets out of segments handed down from the Transport layer.

23. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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
CA:F5:83:EB
Buffering - windowing - congestion avoidance

24. 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?
198.211.57.209
The Transport layer user virtual circuits to create a reliable connection between two hosts.
84:D2:43:B3
Network

25. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Network layer provides routing through an internetwork and logical addressing.
Network
The Physical layer is responsible for the electrical and mechanical connections between devices.
Router

26. 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
Hub
Data Link (LLC sublayer)

27. This device creates many smaller collision domains - but the network is still one large broadcast domain.
The Network layer provides logical addressing - typically IP addressing and routing.
Hub
84:D2:43:B3
Switch or bridge

28. This device can never run full duplex.
Hub
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
132.210.184.166

29. This device uses hardware addresses to filter a network.
00001010.00001011.00001100.01100011
Bridge or switch
Hub
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

30. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
CA:F5:83:EB
84:D2:43:B3
204.51.170.85
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

31. Convert 192.168.10.15 to binary format.
RJ45 UTP crossover cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
204.51.170.85
11000000.10101000.00001010.00001111

32. Convert 172.16.20.55 to binary format.
Network
Data - segment - packet - frame - bit
Decrease the window size.
10101100.00010000.00010100.00110111

33. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
RJ45 UTP rolled cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network
The Session layer sets up - maintains - and terminates sessions between applications.

34. Name four router functions.
Router
Network
Hub
Packet switching - Packet filtering - Internetwork communication - Path selection

35. Which layer is represented by segments?
To create more collision domains and to add more bandwidth for users.
Network
The Transport layer segments user data.
Data - segment - packet - frame - bit

36. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
D8:1B:3D:76
Buffering - windowing - congestion avoidance
Layer 4

37. 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 is responsible for the electrical and mechanical connections between devices.
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).
RJ45 UTP rolled cable.
132.210.184.166

38. This device creates one big collision domain and one large broadcast domain.
The Session layer sets up - maintains - and terminates sessions between applications.
Router
Hub
Transport

39. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Transport
The Network layer provides routing through an internetwork and logical addressing.
RJ45 UTP crossover cable.
Hub and repeater

40. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Router
The Session layer creates sessions between different hosts' applications.
Segments - packets - frames - bits

41. Which layer is responsible for creating - managing - and terminating sessions between applications?
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.
Hub
The Session layer sets up - maintains - and terminates sessions between applications.
The Session layer creates sessions between different hosts' applications.

42. Which layer segments and reassembles data into a data stream?
Transport
Segments - packets - frames - bits
The Data Link layer frames packets received from the Network layer.
Switch or bridge

43. This device sends and receives information about the Network layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router
RJ45 UTP crossover cable.
11000000.10101000.00001010.00001111

44. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Transport
Router
Switch to switch - host to host - switch to host
Network

45. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Hub
Network
The Transport layer user virtual circuits to create a reliable connection between two hosts.
3 - 2 - 1 - none

46. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
The Network layer creates packets out of segments handed down from the Transport layer.
The Network layer provides logical addressing - typically IP addressing and routing.
Network

47. This device can measure the distance to a remote network.
Router
The Session layer sets up - maintains - and terminates sessions between applications.
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).
Source and destination MAC address and FCS field

48. What type of RJ45 UTP cable is used between switches?
Segments - packets - frames - bits
The Presentation layer makes sure that data is in a readable format for the Application layer.
Data Link (LLC sublayer)
RJ45 UTP crossover cable.

49. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
3 - 2 - 1 - none
Switch or bridge
00001010.00001011.00001100.01100011
183/B7

50. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
Hub
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
10101100.00010000.00010100.00110111