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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 represented by frames?
The Data Link layer frames packets received from the Network layer.
Buffering - windowing - congestion avoidance
Transport
Data - segment - packet - frame - bit

2. This device sends and receives information about the Network layer.
Router
Data Link (LLC sublayer)
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.

3. Convert 192.168.10.15 to binary format.
The Session layer creates sessions between different hosts' applications.
11000000.10101000.00001010.00001111
The Physical layer is responsible for the electrical and mechanical connections between devices.
Transport

4. Convert 172.16.20.55 to binary format.
Decrease the window size.
10101100.00010000.00010100.00110111
Switch or bridge
204.51.170.85

5. 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.
RJ45 UTP crossover cable.
Hub and repeater
Data Link

6. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
D8:1B:3D:76
Network
The Data Link layer is responsible for the framing of data packets.
Layer 4

7. Convert 10.11.12.99 to binary format.
RJ45 UTP rolled cable.
Transport
Data Link & Physical
00001010.00001011.00001100.01100011

8. Which layer segments and reassembles data into a data stream?
48 bits (6 bytes)
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.
Hub and repeater

9. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
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
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 and repeater

10. Which layer provides logical addressing that routers will use for path determination?
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
Data Link (LLC sublayer)
The Network layer provides logical addressing - typically IP addressing and routing.

11. What type of RJ45 UTP cable is used between switches?
Packet switching - Packet filtering - Internetwork communication - Path selection
48 bits (6 bytes)
RJ45 UTP crossover cable.
CA:F5:83:EB

12. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Data Link
Hub
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Switch or bridge

13. What are two purposes for segmentation with a bridge?
10101100.00010000.00010100.00110111
Transport
To create more collision domains and to add more bandwidth for users.
Buffering - windowing - congestion avoidance

14. Why does the data communication industry use the layered OSI reference model? (Name two)
204.51.170.85
The Network layer creates packets out of segments handed down from the Transport layer.
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.
Switch to switch - host to host - switch to host

15. Which layer is represented by segments?
Data - segment - packet - frame - bit
The Transport layer segments user data.
Transport
Transport

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

17. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Transport
Transport
Fiber-opticcable
Hub and repeater

18. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Data Link & Physical
Segments - packets - frames - bits
Transport

19. 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?
The Data Link layer frames packets received from the Network layer.
Segments - packets - frames - bits
183/B7
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

20. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
D8:1B:3D:76
Transport
RJ45 UTP rolled cable.

21. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub and repeater
132.210.184.166
The Presentation layer makes sure that data is in a readable format for the Application layer.

22. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
48 bits (6 bytes)
Packet switching - Packet filtering - Internetwork communication - Path selection
183/B7
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.

23. This device can measure the distance to a remote network.
Router
00001010.00001011.00001100.01100011
204.51.170.85
The Session layer creates sessions between different hosts' applications.

24. This layer supports flow control and sequencing.
Data Link
Transport
Decrease the window size.
84:D2:43:B3

25. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
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 Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

26. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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.
Network
The Session layer sets up - maintains - and terminates sessions between applications.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

27. 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.
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
Data Link & Physical
3 - 2 - 1 - none

28. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Buffering - windowing - congestion avoidance
CA:F5:83:EB
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

29. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Network layer provides routing through an internetwork and logical addressing.
Hub
The Session layer sets up - maintains - and terminates sessions between applications.
The Transport layer segments user data.

30. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
198.211.57.209
204.51.170.85
The Data Link layer frames packets received from the Network layer.

31. This layer uses service access points.
Data Link (LLC sublayer)
To provide a means for the receiver to govern the amount of data sent by the sender.
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 takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.

32. This layer creates a virtual circuit before transmitting between two end stations.
Data Link (LLC sublayer)
CA:F5:83:EB
The Network layer creates packets out of segments handed down from the Transport layer.
Transport

33. 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
To create more collision domains and to add more bandwidth for users.
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 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 & Physical

34. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
Router
Network
The Transport layer segments user data.

35. Logical addressing is used at this layer.
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.
Bridge or switch
Hub

36. Which two fields are contained within an IEEE Ethernet frame header?
Packet switching - Packet filtering - Internetwork communication - Path selection
The Presentation layer makes sure that data is in a readable format for the Application layer.
Bridge or switch
Source and destination MAC address and FCS field

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

38. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides routing through an internetwork and logical addressing.

39. What is the purpose of flow control?
Switch or bridge
Router
Switch to switch - host to host - switch to host
To provide a means for the receiver to govern the amount of data sent by the sender.

40. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
204.51.170.85
Segments - packets - frames - bits
RJ45 UTP rolled cable.

41. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
To create more collision domains and to add more bandwidth for users.
Data Link & Physical
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

42. This device breaks up collision domains and broadcast domains.
11000000.10101000.00001010.00001111
Router
Decrease the window size.
To create more collision domains and to add more bandwidth for users.

43. Name three types of connections that can use full duplex.
RJ45 UTP rolled cable.
Switch to switch - host to host - switch to host
CA:F5:83:EB
Fiber-opticcable

44. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Transport
Hub
Hub

45. Ethernet is defined at these layers.
Data Link & Physical
The Session layer sets up - maintains - and terminates sessions between applications.
132.210.184.166
183/B7

46. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
RJ45 UTP crossover cable.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Physical layer is responsible for the electrical and mechanical connections between devices.

47. This device can never run full duplex.
Hub
00001010.00001011.00001100.01100011
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.

48. This device uses hardware addresses to filter a network.
Bridge or switch
Data Link (LLC sublayer)
48 bits (6 bytes)
Fiber-opticcable

49. 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?
The Session layer creates sessions between different hosts' applications.
Buffering - windowing - congestion avoidance
Hub
Decrease the window size.

50. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.
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