The CompTIA 220-1001 exam is one of two exams requires to obtain the CompTIA A+ (1000 series). This exam will focus on networking and network troubleshooting.
1) Which of the following technologies can support Ethernet communication using a building's power infrastructure?
Ethernet over Power also called Power-line Communication allows Ethernet signals to be sent over standard electrical power wiring in a building. This is helpful for situations where both WiFi and running new Ethernet cabling is not supported. Usually this is done by using adapters that plug into a wall power outlet and have a RJ-45 socket. It is often confused with Power over Ethernet, which is using Ethernet signals to power a networking device.
This question is filed under objective 2, Networking
Power-line communication (also known as power-line carrier or PLC, power-line digital subscriber line or PDSL, mains communication, power-line telecommunications or PLT, amd power-line networking or PLN) carries data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to consumers A wide range of power-line communication technologies are needed for different applications, ranging from home automation to Internet access which is often called broadband over power lines (BPL) Most PLC technologies limit themselves to one type of wires (such as premises wiring within a single building), but some can cross between two levels (for example, both the distribution network and premises… Read More
2) Which of the following cabling types has fire-retardant properties?
Plenum cabling is special cabling used in the plenum spacing of buildings. It has special fire-retardant properties to reduce fire's ability to spread.
This question is filed under objective 2, Networking
Plenum cable is electrical cable that is laid in the plenum spaces of buildings In the United States, plastics used in the construction of plenum cable are regulated under the National Fire Protection Association standard NFPA 90A: Standard for the Installation of Air Conditioning and Ventilating Systems All materials intended for use on wire and cables to be placed in plenum spaces are designed to meet rigorous fire safety test standards in accordance with NFPA 262 and outlined in NFPA 90A Plenum cable is jacketed with a fire-retardant plastic jacket of either a low-smoke polyvinyl chloride (PVC) or a fluorinated ethylene polymer (FEP)… Read More
3) True or False: UTP cabling features a fire-retardant jacket.
Unshielded Twisted Pair (UTP) is twisted pair cabling that does not have any sort of cable shielding. Shielded Twisted Pair (STP) does contain additional shielding, however it is for reducing electromagnetic interference and does not provide any fire protection.
This question is filed under objective 1, Mobile Devices
Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility Compared to a single conductor or an untwisted balanced pair, a twisted pair reduces electromagnetic radiation from the pair and crosstalk between neighboring pairs and improves rejection of external electromagnetic interference It was invented by Alexander Graham Bell… Read More
4) Which of the following tools can verify an Ethernet cable's wires are in the correct order?
A cable tester is used to verify a cable can support necessary electrical connections. For example, an ethernet cable tester would verify cables are in the correct order.
This question is filed under objective 5, Hardware and Network Troubleshooting
A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable More advanced cable testers can measure the signal transmission properties of the cable such as its resistance, signal attenuation, noise and interference … Read More
5) What is the maximum transmission speed of Cat 5e cabling?
Cat 5e can reach speeds of 1000 Megabits per second (Mbps), which is the same as 1 Gigabit per second (1 Gbps).
This question is filed under objective 1, Mobile Devices
Category 5 cable (Cat 5) is a twisted pair cable for computer networks Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e) The cable standard provides performance of up to 100 MHz and is suitable for most varieties of Ethernet over twisted pair up to 1000BASE-T (Gigabit Ethernet) Cat 5 is also used to carry other signals such as telephony and video This cable is commonly connected using punch-down blocks and modular connectors Most Category 5 cables are unshielded, relying on the balanced line twisted pair design and differential signaling for noise rejection … Read More
6) Which type of cabling is immune to electromagnetic interference?
Fiber optic cable is immune from electromagnetic interference because it uses light and not electricity to transmit data. Of the remaining options Shielded Twisted Pair (STP) is the least susceptible but is not immune to electromagnetic interference.
This question is filed under objective 2, Networking
An optical fiber is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than electrical cables Fibers are used instead of metal wires because signals travel along them with less loss in addition, fibers are immune to electromagnetic interference, a problem from which metal wires suffer Fibers are also used for illumination and imaging, and are often wrapped in bundles so they may be used to carry light into, or… Read More
7) What type of cabling uses plastic or glass to transmit data using light?
Fiber or Fiber Optic cables are made up of glass and/or plastic. Data is sent by transmitting light through the cables.
Etheroptic is not a real type of cabling, Category cabling uses copper and Lightning is a connector type made by Apple which uses metal contacts to transmit electricity.
This question is filed under objective 2, Networking
An optical fiber is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than electrical cables Fibers are used instead of metal wires because signals travel along them with less loss in addition, fibers are immune to electromagnetic interference, a problem from which metal wires suffer Fibers are also used for illumination and imaging, and are often wrapped in bundles so they may be used to carry light into, or… Read More
8) You are installing cat5 cabling in a large corporate campus. You have measured the distance from a network closet to a new annex building to be 90 meters. According to the cat 5 specification, is the use of a signal repeater necessary?
Category 5 cabling is rated for a maximum of 100 meters.
This question is filed under objective 2, Networking
Category 5 cable (Cat 5) is a twisted pair cable for computer networks Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e) The cable standard provides performance of up to 100 MHz and is suitable for most varieties of Ethernet over twisted pair up to 1000BASE-T (Gigabit Ethernet) Cat 5 is also used to carry other signals such as telephony and video This cable is commonly connected using punch-down blocks and modular connectors Most Category 5 cables are unshielded, relying on the balanced line twisted pair design and differential signaling for noise rejection … Read More
9) What tool would you use to connect an ethernet cable to a patch panel?
A patch panel is a board with a number of electrical sockets, in networking you will often see ethernet patch panels with RJ-45 sockets. A punch down tool helps insert ethernet wiring into the back of the RJ-45 sockets. You can do this by hand, but it is difficult to get good connections leading to packet drops. Using a punch down tool makes this process faster and ensures solid connections between your cabling and patch panel.
This question is filed under objective 2, Networking
A punch down tool, also called a punchdown tool, IDC tool or a krone tool (named after the Krone LSA-PLUS connector), a small hand tool used by telecommunication and network technicians It is used for inserting wire into insulation-displacement connectors on punch down blocks, patch panels, keystone modules, and surface mount boxes (also known as biscuit jacks) … Read More
10) A new ticket has come in requesting a server obtain network access to the corporate email server. Which network port would apply?
Port 25 is used by the Simple Mail Transfer Protocol (SMTP) which can be used to send emails.
This question is filed under objective 2, Networking
The Simple Mail Transfer Protocol (SMTP) is a communication protocol for electronic mail transmission As an Internet standard, SMTP was first defined in 1982 by RFC 821, and updated in 2008 by RFC 5321 to Extended SMTP additions, which is the protocol variety in widespread use today Mail servers and other message transfer agents use SMTP to send and receive mail messages SMTP servers commonly use the Transmission Control Protocol on port number 25 User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing email to the mail server on port 587 or 465 as per RFC 8314… Read More
11) What is the maximum transmission speed of Cat 6 cabling at 100 meters?
Cat 6 cabling can go up to 1000 Megabits per second (Mbps), which is the same as saying 1 Gigabit per second (Gbps). At shorter distances (55 meters) Cat 6 can go up to 10Gbps (10,000 Mbps)
This question is filed under objective 2, Networking
Category 6 cable (Cat 6), is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards Cat 6 has to meet more stringent specifications for crosstalk and system noise than Cat 5 and Cat 5e The cable standard specifies performance of up to 250 MHz, compared to 100 MHz for Cat 5 and Cat 5eWhereas Category 6 cable has a reduced maximum length of 55 metres (180 ft) when used for 10GBASE-T, Category 6A cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100-metre (330 ft) maximum distance as previous Ethernet variants… Read More
12) You are helping a friend with a new wireless router. They are complaining that certain areas of their apartment have much slower internet than others. They live in a dense area with many other apartments in WiFi range. What tool could help you troubleshoot this issue?
A WiFi Analyzer is a mobile device (or software on a mobile device) that scans and tracks WiFi signals. It can help you find areas where a signal is low, and which wireless channels are being used the most. With this information you can reconfigure or reposition your WiFi Access Point for the best speeds and reliability.
This question is filed under objective 5, Hardware and Network Troubleshooting
13) What type of network switch supports plug and play style usage and does not support custom configurations?
There is no official definition of managed and unmanaged switches. Different vendors may market their switches differently. However, in general an unmanaged switch does not support or has very limited configuration options and is meant to work for most networks right out of the box. Managed switches require more configuration to properly function but offer more features and functionality.
This question is filed under objective 2, Networking
A network switch (also called switching hub, bridging hub, and by the IEEE MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality Such switches are commonly known as layer-3 switches or multilayer switchesSwitches for Ethernet are the most common form of network switch… Read More
14) Which of the following cable types uses twisted-pair copper cabling?
Cat 6 uses twisted-pair copper cabling. Fiber optic uses plastic or glass to transmit data using light. RJ-11 and RJ-45 and connector types not cable types.
This question is filed under objective 2, Networking
Category 6 cable (Cat 6), is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards Cat 6 has to meet more stringent specifications for crosstalk and system noise than Cat 5 and Cat 5e The cable standard specifies performance of up to 250 MHz, compared to 100 MHz for Cat 5 and Cat 5eWhereas Category 6 cable has a reduced maximum length of 55 metres (180 ft) when used for 10GBASE-T, Category 6A cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100-metre (330 ft) maximum distance as previous Ethernet variants… Read More
15) What is the maximum transmission speed of Cat 6a cabling at 100 meters?
Category 6a (Augmented) cabling supports 10,000 Megabits per second (Mbps) which is the same as 10 Gigabits per second (Gbps) at distances up to 1000 meters.
This question is filed under objective 1, Mobile Devices
Category 6 cable (Cat 6), is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards Cat 6 has to meet more stringent specifications for crosstalk and system noise than Cat 5 and Cat 5e The cable standard specifies performance of up to 250 MHz, compared to 100 MHz for Cat 5 and Cat 5eWhereas Category 6 cable has a reduced maximum length of 55 metres (180 ft) when used for 10GBASE-T, Category 6A cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100-metre (330 ft) maximum distance as previous Ethernet variants… Read More
16) Which of the following is a form of wireless network that uses cellular communication technologies like 4G and LTE?
Wireless Wide Area Network (WWAN) is a wireless network type that uses the same technology used by cellular networks like LTE, 5G, etc. It is used for larger networks like one spanning a city or large campus.
This question is filed under objective 2, Networking
Wireless wide area network (WWAN), is a form of wireless network The larger size of a wide area network compared to a local area network requires differences in technology Wireless networks of different sizes deliver data in the form of telephone calls, web pages, and streaming video A WWAN often differs from wireless local area network (WLAN) by using mobile telecommunication cellular network technologies such as 2G, 3G, 4G LTE, and 5G to transfer data It is sometimes referred as Mobile Broadband These technologies are offered regionally, nationwide, or even globally and are provided by a wireless service provider WWAN connectivity allows a user with a laptop and a WWAN card to surf the web, check email, or connect to a virtual private… Read More
17) Which type of Ethernet cable can be used for connecting two PCs without the use of a router?
Crossover cables can support direct communication between two computers without the need for an intermediate device. Keep in mind this just refers to the cable, the computers still need to be correctly configured for this to work. Many modern Network Interface Cards (NICs) can support automatic cable type detection allowing a Crossover and Straight-through cable to work. A Rollover cable is used to connect a computer to network devices for configuration purposes only and is sometimes called a console cable. RJ-11 and RJ-45 are connector types not cable types.
This question is filed under objective 2, Networking
An Ethernet crossover cable is a crossover cable for Ethernet used to connect computing devices together directly It is most often used to connect two devices of the same type, eg two computers (via their network interface controllers) or two switches to each other By contrast, patch cables or straight through cables are used to connect devices of different types, such as a computer to a network switch or Ethernet hub Intentionally crossed wiring in the crossover cable connects the transmit signals at one end to the receive signals at the other end Many devices today support auto MDI-X capability, wherein a patch cable can be used in place of a crossover cable, or vice versa, and the receive and transmit signals are reconfigured… Read More
18) Which type of fiber optic cabling is best suited for long distance communication?
Single-mode fiber optic cabling is best suited for long distance communication, while Multi-mode is generally used for shorter distances (within 1 building or group of close buildings).
This question is filed under objective 2, Networking
In fiber-optic communication, a single-mode optical fiber (SMF) is an optical fiber designed to carry only a single mode of light - the transverse mode Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining Maxwell's equations and the boundary conditions These modes define the way the wave travels through space, ie how the wave is distributed in space Waves can have the same mode but have different frequencies This is the case in single-mode fibers, where we can have waves with different frequencies, but of the same mode, which means that they are distributed in space in the same way, and that gives us a single ray of light… Read More
19) What is the maximum transmission speed of Cat 6 cabling at 55 meters?
Category 6 cabling supports 10,000 Megabits per second (Mbps) which is the same as 10 Gigabits per second (Gbps) at distances up to 55 meters. At longer distances (up to 100 Meters) 1 Gbps is supported.
This question is filed under objective 2, Networking
Category 6 cable (Cat 6), is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards Cat 6 has to meet more stringent specifications for crosstalk and system noise than Cat 5 and Cat 5e The cable standard specifies performance of up to 250 MHz, compared to 100 MHz for Cat 5 and Cat 5eWhereas Category 6 cable has a reduced maximum length of 55 metres (180 ft) when used for 10GBASE-T, Category 6A cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100-metre (330 ft) maximum distance as previous Ethernet variants… Read More
20) Which of the following is a device used to test ports such as a network port?
A loopback plug is used to test serial ports, USB ports and network ports. Most commonly you will see network loopback plugs for fiber and ethernet. Loopback plugs reflect signals making it possible to verify that an electrical signal is successfully transmitting between two endpoints.
This question is filed under objective 5, Hardware and Network Troubleshooting
Loopback (also written loop-back) is the routing of electronic signals, digital data streams, or flows of items back to their source without intentional processing or modification It is primarily a means of testing the communications infrastructure There are many example applications It may be a communication channel with only one communication endpoint Any message transmitted by such a channel is immediately and only received by that same channel In telecommunications, loopback devices perform transmission tests of access lines from the serving switching center, which usually does not require the assistance of personnel at the served terminal Loop around is a method of testing between stations that are not necessarily adjacent, wherein… Read More
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