Quiz CCNA 1 - Chapter 4 (Part 1)

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

Data link

Transport

Application

Which statement describes signaling at the physical layer?

Sending the signals asynchronously means that they are transmitted without a clock signal.

Signalling is a method of converting a stream of data into a predefined code.

Wireless encoding includes sending a series of clicks to delimit a frame

Data signals are sent along with a clock signal which occurs at evenly spaced time durations referred to as the bit time; how is this called?

Synchronous

Asynchronous

Morse code

Data signals are transmitted without an associated clock signal; how is this called?

Synchronous

Asynchronous

Morse code

The method of representing the bits is called the ________.

Signaling method

Encoding

Morse code

A 0 is represented by a high to low voltage transition and a 1 is represented as a low to high voltage transition; that's _________.

Manchester encoding

Non-Return to Zero (NRZ)

A 0 may be represented by one voltage level on the media and a 1 might be represented by a different voltage on the media. We call this ______.

Manchester encoding

Non-Return to Zero (NRZ)

________ refers to the amount of time, to include delays, for data to travel from one given point to another.

Latency

Throughput

Bandwidth

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

Latency

Throughput

Bandwidth

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

Latency

Throughput

Bandwidth

___ is the measure of usable data transferred over a given period of time. _ is throughput minus traffic overhead for establishing sessions, acknowledgements, and encapsulation.

Throughput

Goodput

Latency

What is one of the reasons for physical layer protocols to use frame encoding techniques?

To distinguish data bits from control bits

To reduce the number of collisions on the media

To increase the media throughput

What is one of the reasons for physical layer protocols to use frame encoding techniques?

To increase the media throughput

To identify where the frame starts and ends

To reduce the number of collisions on the media

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?

65 Mb/s

105 Mb/s

70 Mb/s

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?

Emi, rfi

RFI, crosstalk

Signal attenuation, crosstalk

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

By increasing and varying the number of twists in each wire pair

By increasing the thickness of the copper wires

By decreasing the number of wires that are used to carry data

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

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

A Cisco proprietary cable used to connect to a router or switch console port is a _________.

Crossover

Rollover

Straight-through

Which statement is correct?

From switch to router, T568A or T568B must be used on both ends.

From router to router, T568A or T568B must be used on both ends.

From switch to router, one end must be T568A and the other end must be T568B.

Which statement is correct about multimode fiber?

SC-SC patch cords are used with multimode fiber cables.

LC-LC patch cords are used with multimode fiber cables.

SC-ST patch cords are used with multimode fiber cables.

Sometimes referred to as square connector or standard connector. It is a widely adopted LAN and WAN connector that uses a push-pull mechanism to ensure positive insertion. This connector type is used with multimode and single-mode fiber.

Subscriber Connector (SC)

Lucent Connector (LC)

Straight-Tip (ST)

Sometimes called a little or local connector, is quickly growing in popularity due to its smaller size. It is used with single-mode fiber and also supports multimode fiber.

Subscriber Connector (SC)

Lucent Connector (LC)

Straight-Tip (ST)

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

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

It is easier to terminate and install than copper cabling.

It is usually cheaper than copper cablings.

Single-mode or multimode? Uses LEDs as a data light source transmitter.

Single-mode

Multimode

Single-mode or multimode? Uses lasers in a single stream as a data light source transmitter.

Single-mode

Multimode

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

They allow for full-duplex connectivity.

They prevent crosstalk from causing interference on the connection

The increase the speed at which data can travel.

Both devices can both transmit and receive on the media but cannot do so simultaneously.

Full-duplex communication

Half-duplex communication

Both devices can transmit and receive on the media at the same time.

Full-duplex communication

Half-duplex communication

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?

Security, Mobility Options, Coverage Area

Packet Collision, Interference, Coverage Area

Security, Interference, Coverage Area

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?

Ieee 802. 11a

IEEE 802. 11ac

Ieee 802. 11g

1st	Namukuwa	90%
2nd	Ramango	57% 361s
3rd	Vstar	47% 1084s
4th	Wanje	43% 422s
5th	Belkharraf	40% 383s
6th	RendyRamadhan	33% 538s

Quiz CCNA 1 - Chapter 4 (Part 1)

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

Which statement describes signaling at the physical layer?

Data signals are sent along with a clock signal which occurs at evenly spaced time durations referred to as the bit time; how is this called?

Data signals are transmitted without an associated clock signal; how is this called?

The method of representing the bits is called the ________.

A 0 is represented by a high to low voltage transition and a 1 is represented as a low to high voltage transition; that's _________.

A 0 may be represented by one voltage level on the media and a 1 might be represented by a different voltage on the media. We call this ______.

________ refers to the amount of time, to include delays, for data to travel from one given point to another.

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

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

___ is the measure of usable data transferred over a given period of time. _ is throughput minus traffic overhead for establishing sessions, acknowledgements, and encapsulation.

What is one of the reasons for physical layer protocols to use frame encoding techniques?

What is one of the reasons for physical layer protocols to use frame encoding techniques?

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?

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

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?

A Cisco proprietary cable used to connect to a router or switch console port is a _________.

Which statement is correct?

Which statement is correct about multimode fiber?

Sometimes referred to as square connector or standard connector. It is a widely adopted LAN and WAN connector that uses a push-pull mechanism to ensure positive insertion. This connector type is used with multimode and single-mode fiber.

Sometimes called a little or local connector, is quickly growing in popularity due to its smaller size. It is used with single-mode fiber and also supports multimode fiber.

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

Single-mode or multimode? Uses LEDs as a data light source transmitter.

Single-mode or multimode? Uses lasers in a single stream as a data light source transmitter.

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

Both devices can both transmit and receive on the media but cannot do so simultaneously.

Both devices can transmit and receive on the media at the same time.

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?

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?

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

Which statement describes signaling at the physical layer?

Data signals are sent along with a clock signal which occurs at evenly spaced time durations referred to as the bit time; how is this called?

Data signals are transmitted without an associated clock signal; how is this called?

The method of representing the bits is called the ________.

A 0 is represented by a high to low voltage transition and a 1 is represented as a low to high voltage transition; that's _________.

A 0 may be represented by one voltage level on the media and a 1 might be represented by a different voltage on the media. We call this ______.

________ refers to the amount of time, to include delays, for data to travel from one given point to another.

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

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

_________ is the measure of usable data transferred over a given period of time. _______ is throughput minus traffic overhead for establishing sessions, acknowledgements, and encapsulation.

What is one of the reasons for physical layer protocols to use frame encoding techniques?

What is one of the reasons for physical layer protocols to use frame encoding techniques?

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?

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

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?

A Cisco proprietary cable used to connect to a router or switch console port is a _________.

Which statement is correct?

Which statement is correct about multimode fiber?

Sometimes referred to as square connector or standard connector. It is a widely adopted LAN and WAN connector that uses a push-pull mechanism to ensure positive insertion. This connector type is used with multimode and single-mode fiber.

Sometimes called a little or local connector, is quickly growing in popularity due to its smaller size. It is used with single-mode fiber and also supports multimode fiber.

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

Single-mode or multimode? Uses LEDs as a data light source transmitter.

Single-mode or multimode? Uses lasers in a single stream as a data light source transmitter.

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

Both devices can both transmit and receive on the media but cannot do so simultaneously.

Both devices can transmit and receive on the media at the same time.

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?

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?

___ is the measure of usable data transferred over a given period of time. _ is throughput minus traffic overhead for establishing sessions, acknowledgements, and encapsulation.