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. This device uses hardware addresses to filter a network.
204.51.170.85
Bridge or switch
11000000.10101000.00001010.00001111
RJ45 UTP crossover cable.

2. This device breaks up collision domains and broadcast domains.
Router
Network
132.210.184.166
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

3. Which layer is represented by segments?
The Transport layer segments user data.
Transport
Layer 4
Router

4. This device can measure the distance to a remote network.
Network
Switch or bridge
Data Link
Router

5. 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 takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
132.210.184.166
RJ45 UTP rolled cable.
Hub

6. Which layer is represented by packets?
Router
The Network layer creates packets out of segments handed down from the Transport layer.
198.211.57.209
The Network layer provides logical addressing - typically IP addressing and routing.

7. Name three types of connections that can use full duplex.
The Data Link layer is responsible for the framing of data packets.
Router
Switch to switch - host to host - switch to host
Switch or bridge

8. What is the bit length and expression form of a MAC address?
The Session layer creates sessions between different hosts' applications.
10101100.00010000.00010100.00110111
48 bits (6 bytes)
To provide a means for the receiver to govern the amount of data sent by the sender.

9. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
198.211.57.209
The Network layer provides logical addressing - typically IP addressing and routing.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

10. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Segments - packets - frames - bits
D8:1B:3D:76
Router
Source and destination MAC address and FCS field

11. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
132.210.184.166
183/B7
00001010.00001011.00001100.01100011
Packet switching - Packet filtering - Internetwork communication - Path selection

12. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Data Link (LLC sublayer)
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Network layer provides routing through an internetwork and logical addressing.
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

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?
Decrease the window size.
Segments - packets - frames - bits
Network
Network

14. Convert 10000100.11010010.01000011.10110011 to hexadecimal 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).
84:D2:43:B3
Packet switching - Packet filtering - Internetwork communication - Path selection
48 bits (6 bytes)

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

16. Logical addressing is used at this layer.
Router
3 - 2 - 1 - none
Network
Hub and repeater

17. This device creates one big collision domain and one large broadcast domain.
Hub
D8:1B:3D:76
Segments - packets - frames - bits
The Session layer creates sessions between different hosts' applications.

18. When data is encapsulated - which is the correct order?
The Network layer creates packets out of segments handed down from the Transport layer.
132.210.184.166
Router
Data - segment - packet - frame - bit

19. What are two purposes for segmentation with a bridge?
To provide a means for the receiver to govern the amount of data sent by the sender.
Segments - packets - frames - bits
To create more collision domains and to add more bandwidth for users.
Data Link

20. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
132.210.184.166
Switch to switch - host to host - switch to host
Fiber-opticcable
CA:F5:83:EB

21. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Presentation layer makes sure that data is in a readable format for the Application layer.

22. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover 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.
Hub
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

23. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub and repeater
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router

24. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
48 bits (6 bytes)
Data Link
RJ45 UTP rolled cable.
Bridge or switch

25. Which two fields are contained within an IEEE Ethernet frame header?
10101100.00010000.00010100.00110111
D8:1B:3D:76
The Physical layer is responsible for the electrical and mechanical connections between devices.
Source and destination MAC address and FCS field

26. 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 Transport layer user virtual circuits to create a reliable connection between two hosts.
Segments - packets - frames - bits
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.
Layer 4

27. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Buffering - windowing - congestion avoidance
183/B7
11000000.10101000.00001010.00001111
Packet switching - Packet filtering - Internetwork communication - Path selection

28. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
The Physical layer is responsible for the electrical and mechanical connections between devices.
Switch or bridge
84:D2:43:B3

29. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Buffering - windowing - congestion avoidance
The Data Link layer is responsible for the framing of data packets.
Transport
To create more collision domains and to add more bandwidth for users.

30. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
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.
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.
Switch or bridge

31. Convert 192.168.10.15 to binary format.
3 - 2 - 1 - none
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
198.211.57.209
11000000.10101000.00001010.00001111

32. Which layer provides logical addressing that routers will use for path determination?
The Session layer creates sessions between different hosts' applications.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides logical addressing - typically IP addressing and routing.
Source and destination MAC address and FCS field

33. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
183/B7
Network
Layer 4
Router

34. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
204.51.170.85
Decrease the window size.
The Network layer provides logical addressing - typically IP addressing and routing.

35. 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?
Router
00001010.00001011.00001100.01100011
Buffering - windowing - congestion avoidance
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

36. Name four router functions.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
11000000.10101000.00001010.00001111
Data Link & Physical
Packet switching - Packet filtering - Internetwork communication - Path selection

37. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
Data Link
Source and destination MAC address and FCS field
Buffering - windowing - congestion avoidance

38. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Router
The Data Link layer frames packets received from the Network layer.
204.51.170.85
RJ45 UTP crossover cable.

39. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Hub
RJ45 UTP crossover cable.
198.211.57.209
The Session layer creates sessions between different hosts' applications.

40. Which layer segments and reassembles data into a data stream?
Transport
The Data Link layer frames packets received from the Network layer.
198.211.57.209
Data Link (LLC sublayer)

41. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
10101100.00010000.00010100.00110111
3 - 2 - 1 - none
Hub
The Data Link layer is responsible for the framing of data packets.

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

43. This layer creates a virtual circuit before transmitting between two end stations.
00001010.00001011.00001100.01100011
Transport
204.51.170.85
Fiber-opticcable

44. This layer supports flow control and sequencing.
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.
CA:F5:83:EB
Transport

45. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Switch or bridge
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.
Decrease the window size.
Data Link (LLC sublayer)

46. Which layer is represented by frames?
Router
Fiber-opticcable
The Network layer creates packets out of segments handed down from the Transport layer.
The Data Link layer frames packets received from the Network layer.

47. Ethernet is defined at these layers.
Data Link & Physical
RJ45 UTP crossover cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Data Link layer frames packets received from the Network layer.

48. What is the purpose of flow control?
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Buffering - windowing - congestion avoidance
To provide a means for the receiver to govern the amount of data sent by the sender.

49. Segmentation of a data stream happens at which layer of the OSI model?
84:D2:43:B3
Transport
Network
The Presentation layer makes sure that data is in a readable format for the Application layer.

50. This device creates many smaller collision domains - but the network is still one large broadcast domain.
204.51.170.85
Switch or bridge
Segments - packets - frames - bits
Data Link (LLC sublayer)