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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 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.
The Network layer provides routing through an internetwork and logical addressing.
Transport
Network

2. What are two purposes for segmentation with a bridge?
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.
The Session layer sets up - maintains - and terminates sessions between applications.
Network

3. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Network
183/B7
Data Link
Switch to switch - host to host - switch to host

4. Name four router functions.
Router
48 bits (6 bytes)
3 - 2 - 1 - none
Packet switching - Packet filtering - Internetwork communication - Path selection

5. This layer creates a virtual circuit before transmitting between two end stations.
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
To create more collision domains and to add more bandwidth for users.
The Data Link layer frames packets received from the Network layer.

6. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
204.51.170.85
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.
Router

7. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
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.
198.211.57.209

8. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Fiber-opticcable
3 - 2 - 1 - none
The Network layer creates packets out of segments handed down from the Transport layer.
84:D2:43:B3

9. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer frames packets received from the Network layer.
00001010.00001011.00001100.01100011
The Data Link layer is responsible for the framing of data packets.
Hub

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

11. This device breaks up collision domains and broadcast domains.
Router
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
To provide a means for the receiver to govern the amount of data sent by the sender.

12. 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.
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
11000000.10101000.00001010.00001111

13. This device can never run full duplex.
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).
10101100.00010000.00010100.00110111
Hub
Packet switching - Packet filtering - Internetwork communication - Path selection

14. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
204.51.170.85
The Network layer provides logical addressing - typically IP addressing and routing.
RJ45 UTP rolled cable.
Packet switching - Packet filtering - Internetwork communication - Path selection

15. 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?
48 bits (6 bytes)
Network
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.

16. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Hub and repeater
The Network layer provides logical addressing - typically IP addressing and routing.
Buffering - windowing - congestion avoidance

17. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
Hub
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.
To create more collision domains and to add more bandwidth for users.

18. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Layer 4
Buffering - windowing - congestion avoidance
D8:1B:3D:76

19. This device sends and receives information about the Network layer.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Session layer creates sessions between different hosts' applications.
RJ45 UTP crossover cable.
Router

20. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
Decrease the window size.
RJ45 UTP rolled cable.
Router

21. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
The Physical layer is responsible for the electrical and mechanical connections between devices.
To provide a means for the receiver to govern the amount of data sent by the sender.
84:D2:43:B3

22. Which layer is represented by bits?
Transport
Hub
Switch or bridge
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

23. When data is encapsulated - which is the correct order?
Packet switching - Packet filtering - Internetwork communication - Path selection
Data - segment - packet - frame - bit
Segments - packets - frames - bits
The Network layer creates packets out of segments handed down from the Transport layer.

24. 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.
The Network layer provides logical addressing - typically IP addressing and routing.
10101100.00010000.00010100.00110111
48 bits (6 bytes)

25. This device uses hardware addresses to filter a network.
Transport
Router
Bridge or switch
Source and destination MAC address and FCS field

26. Which layer is represented by frames?
To provide a means for the receiver to govern the amount of data sent by the sender.
Transport
D8:1B:3D:76
The Data Link layer frames packets received from the Network layer.

27. This layer supports flow control and sequencing.
00001010.00001011.00001100.01100011
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Session layer sets up - maintains - and terminates sessions between applications.
Transport

28. What is the bit length and expression form of a MAC address?
Fiber-opticcable
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 Network layer provides logical addressing - typically IP addressing and routing.

29. 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?
132.210.184.166
Decrease the window size.
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).

30. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Switch or bridge
Fiber-opticcable
198.211.57.209
D8:1B:3D:76

31. This layer uses service access points.
Data Link (LLC sublayer)
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.
Transport

32. Ethernet is defined at these layers.
Data Link & Physical
Data - segment - packet - frame - bit
48 bits (6 bytes)
CA:F5:83:EB

33. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Transport
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).
204.51.170.85

34. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
CA:F5:83:EB
Bridge or switch
Hub and repeater

35. Name three types of connections that can use full duplex.
The Network layer provides logical addressing - typically IP addressing and routing.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Switch to switch - host to host - switch to host
RJ45 UTP rolled cable.

36. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
To create more collision domains and to add more bandwidth for users.
Buffering - windowing - congestion avoidance
48 bits (6 bytes)

37. This device can measure the distance to a remote network.
Hub
To provide a means for the receiver to govern the amount of data sent by the sender.
Router
Transport

38. This device creates one big collision domain and one large broadcast domain.
Hub
204.51.170.85
Switch to switch - host to host - switch to host
Source and destination MAC address and FCS field

39. 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.
11000000.10101000.00001010.00001111
Data Link (LLC sublayer)
Decrease the window size.

40. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
The Transport layer segments user data.
10101100.00010000.00010100.00110111
The Data Link layer frames packets received from the Network layer.

41. Which layer is represented by segments?
10101100.00010000.00010100.00110111
RJ45 UTP crossover cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Transport layer segments user data.

42. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Transport
CA:F5:83:EB
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

43. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
RJ45 UTP rolled cable.
84:D2:43:B3
11000000.10101000.00001010.00001111
Transport

44. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Transport
10101100.00010000.00010100.00110111
RJ45 UTP crossover cable.
Segments - packets - frames - bits

45. Segmentation of a data stream happens at which layer of the OSI model?
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.
Bridge or switch
Hub and repeater
Transport

46. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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.
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
Network

47. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Data - segment - packet - frame - bit
Segments - packets - frames - bits
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 the electrical and mechanical connections between devices.

48. Which layer segments and reassembles data into a data stream?
Data - segment - packet - frame - bit
132.210.184.166
Transport
Buffering - windowing - congestion avoidance

49. Which of the following are 3 common types of flow control?
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection
Buffering - windowing - congestion avoidance
Router

50. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Data - segment - packet - frame - bit
183/B7
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 the electrical and mechanical connections between devices.