Test your basic knowledge |

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. 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.
Hub
Switch to switch - host to host - switch to host
Data Link & Physical

2. Ethernet is defined at these layers.
11000000.10101000.00001010.00001111
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).
Data Link & Physical

3. When data is encapsulated - which is the correct order?
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.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit

4. This device creates many smaller collision domains - but the network is still one large broadcast domain.
RJ45 UTP crossover cable.
Switch or bridge
The Network layer provides routing through an internetwork and logical addressing.
Data - segment - packet - frame - bit

5. Convert 10.11.12.99 to binary format.
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.
RJ45 UTP rolled cable.
00001010.00001011.00001100.01100011
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

6. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
84:D2:43:B3
Hub
Layer 4
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.

7. Which layer provides logical addressing that routers will use for path determination?
11000000.10101000.00001010.00001111
Packet switching - Packet filtering - Internetwork communication - Path selection
84:D2:43:B3
The Network layer provides logical addressing - typically IP addressing and routing.

8. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
132.210.184.166
204.51.170.85
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides routing through an internetwork and logical addressing.

9. Which layer is represented by segments?
48 bits (6 bytes)
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 Transport layer segments user data.
The Presentation layer makes sure that data is in a readable format for the Application layer.

10. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Switch to switch - host to host - switch to host
Segments - packets - frames - bits
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Network layer provides logical addressing - typically IP addressing and routing.

11. Which layer is represented by bits?
84:D2:43:B3
Buffering - windowing - congestion avoidance
132.210.184.166
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

12. Which layer segments and reassembles data into a data stream?
132.210.184.166
Transport
198.211.57.209
RJ45 UTP rolled cable.

13. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Buffering - windowing - congestion avoidance
Network
Hub and repeater
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

14. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
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
Transport

15. Logical addressing is used at this layer.
183/B7
RJ45 UTP rolled cable.
Data Link
Network

16. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Transport layer segments user data.
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
D8:1B:3D:76

17. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
48 bits (6 bytes)
The Physical layer is responsible for the electrical and mechanical connections between devices.
132.210.184.166
3 - 2 - 1 - none

18. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
48 bits (6 bytes)
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.
Buffering - windowing - congestion avoidance

19. Convert 192.168.10.15 to binary format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
11000000.10101000.00001010.00001111
D8:1B:3D:76
The Physical layer is responsible for the electrical and mechanical connections between devices.

20. 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.
84:D2:43:B3
Transport
11000000.10101000.00001010.00001111

21. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Data Link & Physical
Data Link
D8:1B:3D:76
198.211.57.209

22. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
CA:F5:83:EB
Fiber-opticcable
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).
Transport

23. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
D8:1B:3D:76
Segments - packets - frames - bits
Data - segment - packet - frame - bit

24. Which two fields are contained within an IEEE Ethernet frame header?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Source and destination MAC address and FCS field
Transport
84:D2:43:B3

25. Name three types of connections that can use full duplex.
Data - segment - packet - frame - bit
Router
Bridge or switch
Switch to switch - host to host - switch to host

26. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
The Transport layer segments user data.
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.
Transport

27. This layer creates a virtual circuit before transmitting between two end stations.
Source and destination MAC address and FCS field
CA:F5:83:EB
Router
Transport

28. This layer uses service access points.
Switch or bridge
Data Link (LLC sublayer)
Transport
Transport

29. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
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 Transport layer segments user data.
Hub

30. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
48 bits (6 bytes)
Hub and repeater
84:D2:43:B3
The Network layer provides logical addressing - typically IP addressing and routing.

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

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

33. 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.
Data Link (LLC sublayer)
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub

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

35. This layer supports flow control and sequencing.
Transport
Buffering - windowing - congestion avoidance
Decrease the window size.
Hub

36. What is the bit length and expression form of a MAC address?
To create more collision domains and to add more bandwidth for users.
00001010.00001011.00001100.01100011
Transport
48 bits (6 bytes)

37. Which layer chooses and determines the availability of communicating partners along with the resources necessary to make the connection - coordinates partnering applications - and forms a consensus on procedures for controlling data integrity and err
Switch or bridge
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).
Hub
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

38. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
3 - 2 - 1 - none
11000000.10101000.00001010.00001111
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.
Switch to switch - host to host - switch to host

39. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Data Link
The Data Link layer is responsible for the framing of data packets.
00001010.00001011.00001100.01100011
3 - 2 - 1 - none

40. This device creates one big collision domain and one large broadcast domain.
Hub
The Physical layer is responsible for the electrical and mechanical connections between devices.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Transport

41. Segmentation of a data stream happens at which layer of the OSI model?
The Data Link layer frames packets received from the Network layer.
Transport
11000000.10101000.00001010.00001111
Data Link & Physical

42. 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
RJ45 UTP rolled cable.
11000000.10101000.00001010.00001111
Transport

43. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Source and destination MAC address and FCS field
132.210.184.166
183/B7
Router

44. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
The Network layer creates packets out of segments handed down from the Transport layer.
204.51.170.85
Segments - packets - frames - bits

45. 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?
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).
Packet switching - Packet filtering - Internetwork communication - Path selection
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.

46. This device can measure the distance to a remote network.
183/B7
The Session layer creates sessions between different hosts' applications.
Router
Transport

47. What type of RJ45 UTP cable is used between switches?
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).
RJ45 UTP crossover cable.
Network

48. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Hub and repeater
Network
Data - segment - packet - frame - bit
The Data Link layer frames packets received from the Network layer.

49. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Data Link & Physical
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 Session layer sets up - maintains - and terminates sessions between applications.
The Data Link layer is responsible for the framing of data packets.

50. This device breaks up collision domains and broadcast domains.
Hub
132.210.184.166
Router
RJ45 UTP crossover cable.