Which of the following statements describe the features of multimode fiber optics?

Jul 7, 2020 Last Updated: Jan 21, 2021

Inhaltsverzeichnis Show

immense physical, emotional, and spiritual pain.
Which of the following is a feature of multimode fiber?
Which of the following are characteristic features of Category 5e?
Which of the following cable types can transmit both video and audio data?
Which of the following acronyms refers to a solution that allows for carrying both data and electrical power over a single twisted

Question:
Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)

Fiber-optic cabling does not conduct electricity.
Fiber-optic cabling has high signal loss.
Fiber-optic cabling is primarily used as backbone cabling.
Multimode fiber-optic cabling carries signals from multiple sending devices.
Fiber-optic cabling uses LEDs for single-mode cables and laser technology for multimode cables.

Explanation: Fiber-optic cabling is primarily used for high-traffic backbone cabling and does not conduct electricity. Multimode fiber uses LEDs for signaling and single-mode fiber uses laser technology. FIber-optic cabling carries signals from only one device to another.

More Questions: Introduction to Networks (Version 7.0) – ITNv7 Practice Final Exam
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immense physical, emotional, and spiritual pain.

Question	Answer
T/F: A serial cable with an RJ-45 connector is capable of being used through an RJ-45 Ethernet port.	False
T/F: Multimode fiber contains a core that is larger than a single mode fiber core.	True
T/F: A continuity tester should not be used on a live network segment.	True
T/F: In order to achieve 1000Base-T over CAT5e cable, 2 pairs of copper are needed.	False
T/F: The ST and SC fiber connectors are the most commonly found connectors due to their smaller sizes.	False
T/F: A time domain reflectometer sends a signal and analyzes the return signal's change in amplitude to determine where cable imperfections may exist.	True
T/F: Latency on data networks is based on a calculation of a packet's round trip time (RTT).	True
T/F: RG-59 is more expensive than RG-6, but has better resistance to attenuation.	False
T/F: A short circuit is one where needed connections are missing, such as when a wire breaks.	False
T/F: A wavelength mismatch occurs when transmissions are optimized for one type of cable but sent over a different type of cable.	True
What is the minimum category of UTP cable required in order to support Gigabit speeds?	Cat 5e
What is the maximum supported throughput of a CAT6 cable?	10 Gbps
PoE+ devices are defined by what IEEE standard?	802.3at
Both 10GBase-ER and 10GBase-EW have what maximum distance limitation on a segment of single mode fiber?	40km
Which statement accurately describes what near end crosstalk (NEXT) is?	NEXT is crosstalk that occurs between wire pairs near the source of a signal.
What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment?	coarse wavelength division multiplexing
A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter, despite verifying terminal settings. What is the issue?	The cable must be a rollover cable.
Noise that can degrade or distort a signal on a network is measured with what unit?	decibels
What statement describes a transmission flaw that is occurring due to attenuation?	A customer modem is continuously losing signal due to large distance from the transmitting device.
Utilizing time slots that are adjusted according to priority and need is an example of what type of multiplexing on copper lines?	statistical time division multiplexing
In a coaxial cabling, what does the RG rating measure?	The materials used for shielding and conducting cores.
You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard must you use?	TIA/EIA 568A
A Fast Ethernet connection utilizes what pins on an RJ-45 plug?	1, 2, 3, 6
When terminating an Ethernet cable, about how far should the cable sheath extend into the plug?	3/8 inch
What is the fastest Ethernet standard that can possibly be used on twisted-pair cabling?	10GBase-T
Which of the following statements about fiber-optic cabling is accurate?	Light experiences virtually no resistance when traveling through glass.
A typical fiber termination kit should include what tool for cutting a clean slice through fiber strands?	fiber cleaver
What is the industry standard angle for an Angle Polished Connector (APC)?	8 degrees
You've been handed a fiber with a 1.25-mm ferrule that requires a connector. What is the most commonly used connector for this ferrule size?	local connector (LC)
Which of the following statements correctly describes the SFP+ transceiver?	SFP+ is the same size as SFP, and supports a theoretical maximum transmission speed of 16 Gbps.
The 1000Base-LX utilizes light with what wavelength?	1300 nanometers
What kind of tool can you use to measure voltage on a cable length?	multimeter
Why should you terminate coaxial cable with connectors that are rated for the exact cable type?	A mismatched connector will have different impedance ratings, causing data errors.
When viewing the pinout for T568B, what is the correct order of wire colors, starting at pin 1?	white/orange, orange, white/green, blue, white/blue, green, white/brown, brown
Telephone connections follow what registered jack standard?	registered jack 11 (RJ-11)
What statement regarding the Power Over Ethernet standards is inaccurate?	Power over Ethernet requires CAT6 or better copper cable.
Bidirectional transceivers utilize what technology to separate the data in each direction?	wavelength division multiplexing
Signals that can travel in only one direction on a medium are referred to as what type of signal?	simplex
What statement correctly describes "jitter"?	Jitter is what happens when packets experience varying amounts of delay and arrive out of order.
Broadband cable Internet service and cable TV are most commonly delivered over long distances via what type of cable?	RG-6
T/F: All wireless signals are carried through the air by electromagnetic waves.	True
T/F: NFC tags are very expensive and cannot be purchased blank, requiring them to be pre-loaded.	False
T/F: The Wi-Fi Protected Setup PIN can be easily cracked through a brute force attack.	True
T/F: Infrared technology utilizes an LED that emits light with shorter wavelengths than red light.	False
T/F: The most secure Wi-Fi communication is made possible by combining a RADIUS server with WPA or WPA2, known as WPA-Enterprise or WPA2-Enterprise, respectively.	True
T/F: Due to many vulnerabilities and a short key length, the WPA security standard was replaced with WEP.	False
T/F: The Wireless Personal Area Network (WPAN) is defined in the 802.15 standard.	True
T/F: Z-Wave transmissions have a range of up to 50m per hop, and can tolerate up to 8 hops through repeaters.	False
T/F: An 802.11 data frame contains four address fields, in contrast to the two address fields in 802.3 Ethernet.	True
T/F: The LLC sublayer is primarily concerned with managing MAC addresses in message frames.	False
Diffraction has what affect on a wireless signal's propagation?	The signal is split into secondary waves that continue in the direction in which they split.
How does refraction affect the propagation of a wireless transmission?	It distorts the signal as it travels into and through a different transmission medium.
In Linux, what command can be used for viewing and setting wireless interface parameters?	iwconfig
At what layer of the OSI model do the 802.11 standards vary?	Physical layer
What special signal is issued periodically from an AP and contains the network transmission rate and service set identifier (SSID), as well as other information needed for a computer to associate with the AP?	beacon frame
In IEEE terminology, a group of stations that share an access point are said to be part of which of the following?	basic service set
What 802.11 frame type is involved in association and reassociation, including probe and beacon frames?	management frames
Which 802.11 frame type is related to medium access and data delivery, and includes ACK and RTS/CTS frames?	control frames
How does the 802.11 data frame indicate how a large packet should be fragmented?	The sequence control field indicates how packets will be subdivided.
The use of multiple antennas on an access point to issue a signal to one or more receivers is enabled by what 802.11 innovation?	multiple input-multiple output (MIMO)
In an 802.11 data frame, what is the size of the frame check sequence field?	6 bytes
How many data streams are used in 802.11ac Wave 2 devices?	4 data streams
The wireless spectrum, as defined by the FCC, spans between which two frequencies?	9 kHz and 300 GHz
The 802.11 standard specifies the use of what technique in order to minimize the potential for collisions?	Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)
802.11ac Wave 2 devices can theoretically support how much maximum throughput?	3.47 Gbps
A wireless node that is in active scanning mode transmits what special type of frame in order to find available access points?	probe frame
What type of device can be used to assess the quality of a wireless signal?	spectrum analyzer
What scenario describes an evil twin attack?	A malicious access point is configured with the SSID of a non-malicious public access point.
Which Bluetooth power class allows for a maximum power output of 100 mW and a range of up to 100 m?	Class 1
Healing messages are a feature of what smart home protocol?	Z-Wave
When using RFID, what is an ARPT (Active Reader Passive Tag)?	It is a tag that is activated by an active reader, and uses power from the reader's radio to power its transmission.
Near-field communication devices send data at what fixed frequency?	13.56 MHz
What is the purpose of the Layer 2 LLC sublayer?	It is used to handle multiplexing, flow and error control, and reliability.
What optional protocol can be used in 802.11 to reserve the medium for one node's use?	RTS/CTS (Request to Send/Clear to Send)
In an 802.11 data frame, what is the maximum amount of data that can be sent?	2312 bytes
Which of the following statements regarding the 802.11ac standard is NOT accurate?	802.11ac access points function more like a hub than a switch.
You are troubleshooting a client's wireless networking issue. Which of the following will prevent the client from connecting to the network?	The client has a wireless profile configured for the "campus" SSID, but the access point is broadcasting the "CAMPUS" SSID.
When troubleshooting wireless issues, what statement is accurate?	Access points that use overlapping channels can cause interference with each other if they are too close.
If you need to evaluate Wi-Fi network availability as well as optimize Wi-Fi signal settings and identify security threats, what tool should you use?	Wi-Fi analyzer
Upon connecting to a Wi-Fi network, you're redirected to a login screen and a request to accept terms of service before being connected. What is this an example of?	captive portal

Which of the following is a feature of multimode fiber?

Multimode fiber optic cable has a large diametral core that allows multiple modes of light to propagate. Because of this, the number of light reflections created as the light passes through the core increases, creating the ability for more data to pass through at a given time.

Which of the following are characteristic features of Category 5e?

Cat 5e Features:.

Affordable..

Frequency of up to 100MHz..

Less interference than Cat5..

Top speed of 1000Mbps..

Maximum cable length of 100 metres..

RJ45 Connectors..

Which of the following cable types can transmit both video and audio data?

HDMI Cables - HDMI Cables are used to transmit both video and audio signal from your device to a TV or monitor. They simplify the process of connecting multiple devices by only having to use the one HDMI cable.

Which of the following acronyms refers to a solution that allows for carrying both data and electrical power over a single twisted

Power over Ethernet (PoE) is a standard that allows Ethernet cables to transmit data and power simultaneously using a single network cable.

Which of the following statements describe the features of multimode fiber optics?

immense physical, emotional, and spiritual pain.

Which of the following is a feature of multimode fiber?

Which of the following are characteristic features of Category 5e?

Which of the following cable types can transmit both video and audio data?

Which of the following acronyms refers to a solution that allows for carrying both data and electrical power over a single twisted

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