CCNA1 Chapter 4 Exam & Answer

Soal Beserta jawaban Latihan CCNA 1

CHAPTER 4

STMIK Nusa Mandiri Jakarta

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

They allow for full-duplex connectivity.

The two strands allow the data to travel for longer distances without degrading.

They prevent crosstalk from causing interference on the connection.

They increase the speed at which the data can travel.\

2. What is indicated by the term throughput?

the measure of the usable data transferred across the media

the capacity of a particular medium to carry data

the measure of the bits transferred across the media over a given period of time

the guaranteed data transfer rate offered by an ISP

the time it takes for a message to get from sender to receiver

3. What are two examples of hybrid topologies? (Choose two.)

partial mesh

full mesh

hub and spoke

extended star

point-to-point

4. What is a role of the Logical Link Control sublayer?

to provide access to various Layer 1 network technologies

to mark frames to identify the network layer protocol being carried

to provide data link layer addressing

to define the media access processes performed by network hardware

5. 

PC on the left connects to a switch. This connection is labeled 1. The switch connects to a router. This connection is labeled 2. The router connects to another router. This link is labeled 3.

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?​

1 - crossover, 2 - straight-through, 3 - rollover

1 - crossover, 2 - rollover, 3 - straight-through

1 - rollover, 2 - straight-through, 3 - crossover

1 - rollover, 2 - crossover, 3 - straight-through

6. Which statement describes an extended star topology?

Each end system is connected to its respective neighbor via an intermediate device.

End devices are connected together by a bus and each bus connects to a central intermediate device.

End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.

All end and intermediate devices are connected in a chain to each other.

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

It is able to be installed around sharp bends.

It is usually cheaper than copper cabling.

It is easier to terminate and install than copper cabling.

It is able to carry signals much farther than copper cabling.

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

DIN

RJ-45

RJ-11

PS-2

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

to verify the physical address in the frame

to verify the integrity of the received frame

to verify the logical address in the frame

to compute the checksum header for the data field in the frame

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

physical

transport

application

data link

11. 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?​

The transmitting node inserts start and stop bits into the frame.

The receiving node identifies the beginning of a frame by seeing a physical address.

The transmitting node sends a beacon to notify that a data frame is attached.

The transmitting node sends an out-of-band signal to the receiver about the beginning of the frame.

12. What is true concerning physical and logical topologies?

Physical topologies display the IP addressing scheme of each network.

Physical topologies are concerned with how a network transfers frames.

Logical topologies refer to how a network transfers data between devices.

The logical topology is always the same as the physical topology.

13. Option 1: laser as light source. Press spacebar to enter matching mode. 

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

---

supports full-duplex operation

Multimode Fiber

LED as light source

several paths of light into the fiber

generally used for campus backbone

Single-mode Fiber

only one ray of light into the fiber

generally used with LANs

laser as light source

14. 

The graphic displays a terminated RJ45 connector. The untwisted wires at the end of the PVC sheath are crimped by the connector.

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

The woven copper braid should not have been removed.

The wrong type of connector is being used.

The wires are too thick for the connector that is used.

The untwisted length of each wire is too long.

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

to distinguish data from control information

to provide better media error correction

to identify where the frame starts and ends

to increase the media throughput

to reduce the number of collisions on the media

16. What is the definition of bandwidth?

the measure of the transfer of bits across the media over a given period of time

the speed at which bits travel on the network

the amount of data that can flow from one place to another in a given amount of time

the measure of usable data transferred over a given period of time

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

data

logical address

physical address

error detection

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

It accepts Layer 3 packets and encapsulates them into frames.

It monitors the Layer 2 communication by building a MAC address table.

It provides media access control and performs error detection.

It encrypts data packets.

It determines the path to forward packets.

19. 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.)

crosstalk

signal attenuation

extended length of cabling

EMI

RFI​

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

simplex

half duplex

full duplex

multiplex

21. Which characteristic describes crosstalk?

the loss of wireless signal over excessive distance from the access point

the distortion of the network signal from fluorescent lighting

the distortion of the transmitted messages from signals carried in adjacent wires

the weakening of the network signal over long cable lengths

22. 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.)

packet collision

mobility options

interference

security

extensive cabling

coverage area

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

twisting the wires together into pairs

encasing the cables within a flexible plastic sheath

terminating the cable with special grounded connectors

wrapping a foil shield around the wire pairs