CCNA 1 Chapter 4 v5 Exam Answers 2016

1
What are two reasons for physical layer protocols to use frame encoding techniques? (Choose two.)

2
Which statement is correct about multimode fiber?

3
Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

4
The throughput of a FastEthernet network is 80 Mb/s. The traffic overhead for establishing sessions, acknowledgments, and encapsulation is 15 Mb/s for the same time period. What is the goodput for this network?

5
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)

6. 
What is the purpose of the FCS field in a frame?

7. 
As data travels on the media in a stream of 1s and 0s how does a receiving node identify the beginning and end of a frame?​

8. 
Which statement describes signaling at the physical layer?

9. 
A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

10. 
What is one main characteristic of the data link layer?

11. 
What is one advantage of using fiber optic cabling rather than copper cabling?

12.
Fill in the blank.

13. 
Why are two strands of fiber used for a single fiber optic connection?

14.

Refer to the exhibit. The PC is connected to the console port of the switch. All the other connections are made through FastEthernet links. Which types of UTP cables can be used to connect the devices?​

15. 
What is true concerning physical and logical topologies?

16.
Fill in the blank.

17.

Refer to the exhibit. What is wrong with the displayed termination?

18.
Fill in the blank with a number.

19.
What are two characteristics of 802.11 wireless networks? (Choose two.)

20. 
A network administrator is required to upgrade wireless access to end users in a building. To provide data rates up to 1.3 Gb/s and still be backward compatible with older devices, which wireless standard should be implemented?

21. 
How is the magnetic field cancellation effect enhanced in UTP cables?

22.
Match the steps to the physical layer operations that occur when data is sent from one node and received at another node.

Sort elements

23. What is true concerning physical and logical topologies?

24. What is indicated by the term throughput?

25. Which characteristic describes crosstalk?

26. What technique is used with UTP cable to help protect against signal interference from crosstalk?

27. Which type of connector does a network interface card use?

28. What are two services performed by the data link layer of the OSI model? (Choose two.)

29. Which method of data transfer allows information to be sent and received at the same time?

30. Which statement describes an extended star topology?

31. Refer to the exhibit.

Which statement describes the media access control methods that are used by the networks in the exhibit?

32. What is contained in the trailer of a data-link frame?

33. What is the function of the CRC value that is found in the FCS field of a frame?

34. Match the characteristics to the correct type of fiber. (Not all options are used.)