z 2 Cabling and Topology & LS_Cables and Connectors

(LS Fiber Q06): Which of the following are characteristics of an MT-RJ fiber optic connector? (Select two answers only. You must have both answers correct for credit. There is no partial credit for this question) They use a nickel plated housing. They are used with multi-fiber fiber optic ribbon cables. They can be used with the multimode fiber optic cables They use metal guide pins to ensure accurate alignment. They use a keyed bayonet. They must never be used with single mode fiber-optic cables

*They can be used with the multimode fiber optic cables *They use metal guide pins to ensure accurate alignment. MT-RJ connectors can be used with either a multi-mode or single mode fiber optic cabling. The connector is made from plastic and uses metal guide pins to ensure it is properly aligned in the jack.

(MMv2C03Q20): Which of the following is a network topology that relies on a main line of network cabling, normally coaxial cable? Star Bus Hub Ring Mesh

Bus

(MMv2C03Q01): Which of the following are standard network topologies? (Select three.) Bus Star Ring Dual-ring

Bus Star Ring

(TRANS Q2-1-1): Which unshielded twisted -pair (UTP) category consists of four twisted pairs of copper wire and is certified for transmission rates of up to 100 Mbps? Category 1 Category 2 Category 3 Category 4 Category 5

Category 5 Category 5 UTP cabling is the most widely used category of UTP cable. It enables transmission rates of up to 100 Mbps, and it is the highest category of UTP cabling.UTP transmission rates are as follows:* Category 1 - up to 4 Mbps* Category 2 - up to 4 Mbps* Category 3 - up to 10 Mbps* Category 4 - up to 16 Mbps* Category 5 - up to 100 Mbps* Category 5e - up to 1000 Mbps* Category 6 - up to 1000 MbpsCategory 1 wiring consists of two pairs of twisted copper wire. It is rated for voice grade, not data communication. It is the oldest UTP wiring and is used for communication on the Public Switched Telephone Network (PSTN).Category 2 wiring consists of four pairs of twisted copper wire and is suitable for data communications of up to 4 Mbps.Category 3 wiring consists of four pairs of twisted copper wire with three twists per foot. It is suitable for 10 Mbps data communication. It has been the most widely used UTP standard since the mid 1980s, especially for Ethernet networks.Category 4 wiring consists of four pairs of twisted copper wire and is rated for 16 Mbps. It was designed with 16 Mbps Token Ring networks in mind.Category 5 wiring consists of four twisted pairs of copper wire terminated by RJ -45 connectors. Category 5 cabling can support frequencies of up to 100 MHz and speeds of up to 100 Mbps. It can be used for ATM, Token Ring, 1000Base -T, 100Base -T, and 10Base -T networking.NOTE: Category 5e cable is the most commonly used cable for new UTP implementations. The "e" in Category 5e cable stands for "enhanced." This enhanced specification will support bandwidths of up to 350 MHz.

(MMv2C03Q09): What are the main components of fiber-optic cabling? (Select three.) Cladding Insulating jacket Copper core Fiber

Cladding Insulating jacket Fiber

(LS Wiring Q11): You are building network cables and attaching RJ-45 connectors to each end. Which tool do you need for this task? Vampire taps Needle Nose Pliers Punch Down Tool Crimping tool

Crimping tool

(MMv2C03Q19): The twisting of the cables in UTP and STP reduces which of the following problems? EMI RFI Cross Talk Attenuation

Cross Talk

(LS Wiring Q05): Which of the following describes the point where the service provider's responsibility ends and the customer's responsibility begins for installing and maintaining wiring and equipment? Vertical Cross Connect Demac IDF Punchdown Block Smart Jack

Demac When you contract with a local exchange carrier (LEC) four data or telephone services, they install a physical cable and a termination jack onto your premises. The demarcation point (demarc) is the line that marks the boundary between the telco equipment and the private network or telephone system. Typically, the LEC is responsible for all equipment on one side of the demarc , and the customer is responsible for all equipment on the other side of the demark.A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demac.An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the main distribution frame (MDF) although additional IDFs can be added on each floor as necessary.

(LS Coax Q05): You have just signed up for a broadband home Internet service that uses coaxial cable. Which conductor type will you most likely use? ST RJ-45 SC Rj-11 F-type BNC

F-type Use an F type for broadband cable connections that use collects a cable. The F connector is a type of coaxial RF connector commonly used for "over the air" terrestrial television, cable television and universally for satellite television and cable modems, usually with RG-6/U cable or, in older installations, with RG-59/U cable.Use a BNC connector for 10Base2 Ethernet networks. Use an RJ-11 connector for modem connections to a phone line. Use an RJ-45 connector for Ethernet network that uses twisted pair cable. Use ST or SC connectors for fiber-optic cables.

(MMv2C03Q06): What aspects of network cabling do the IEEE committees establish? (Select three.) Frame size Speed Color of sheathing Cable types

Frame size Speed Cable types

(MMv2C03Q08): What applications are best suited for fiber-optic cabling? (Select two.) Short distances Wireless networks High-EMI areas Long distances

High-EMI areas Long distances

(MMv2C03Q15): Which committee is responsible for wireless networking standards? IEEE 802.2 IEEE 802.3 IEEE 802.5 IEEE 802.11

IEEE 802.11

(MMv2C03Q05): What organization is responsible for establishing and promoting networking standards? Institute of Electrical and Electronics Engineers (IEEE) International Standards Organization (ISO) Federal Communications Commission (FCC) International Telecommunications Association (ITA)

Institute of Electrical and Electronics Engineers (IEEE)

(LS Coax Q01): Which of the following are characteristics of coaxial network cable? (Select three answers only. You must have all answers correct for credit. There is no partial credit for this question.) It uses two concentric metallic conductors. The ends of the cable must be terminated. It has a conductor made from copper in the center of the cable. It uses RJ-45 connectors. It is composed of four pairs of 22 gauge copper wire. It uses to concentric conductors made from plastic or glass which conduct light signals. The conductors within the cable are twisted around each other to eliminate crosstalk

It uses two concentric metallic conductors. The ends of the cable must be terminated. It has a conductor made from copper in the center of the cable. Coaxial cable is composed of a central copper conductor surrounded by an insulator which is then surrounded by a second metallic mesh conductor. The name coaxial is derived from the fact that both of these conductors share a common axis. When using coaxial cable, both ends of the cable must be terminated.

(LS Wiring Q08): Which of the following terms identifies the wiring closet in the basement or a ground floor that typically includes the demarcation point? IDF 110 Block MDF Smart Jack Horizontal Cross Connect

MDF the main distribution frame (MDF) is the main wiring points for the building. The MDF is typically located on the bottom floor basement. The LEC typically installs the demark to the MDF. An intermediate distribution frame (IDF) is a small wiring distribution point within the building. IDFs are typically located on each floor directly above the MDF, although additional IDFs can be added on each floor is necessary.A horizontal cross connect connects wiring closets on the same floor. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc.

(MMv2C03Q04): What topology provides the most fault tolerance? Bus Ring Star-bus Mesh

Mesh Wireless networks, with no cabling, can be set up easily in a mesh network to provide the most fault tolerance of the network topologies listed.

(MMv2C03Q11): Most fiber-optic installations use LEDs to send light signals and are known as what? Single-mode Multimode Complex mode Duplex mode

Multimode

(LS Wiring Q01): Which pins in an Rj-45 connector are used to transmit data when used on a 100BaseT Ethernet network? (Select two answers only. You must have both answers correct for credit. There is no partial credit for this question) Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8

Pin 1 Pin 2 For a 100BaseT cable, Pins 1 and 2 are used to transmit data; pins 3 and 6 are used to receive data.

(LS TwistedPair Q04): You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights. You would like to run your Ethernet cables in this area. Which type of cable must you use? Fiber Optic PVC STP Plenum Cat 5e or Cat 6e

Plenum Plenum cable is fire resistant and non-toxic; it must be used when wiring above ceiling tiles. PVC cable cannot be used to wire above ceilings because it is toxic when burned.Cat 5e cables provide better EMI protection than Cat 5 cables, and Cat 6e cables are an improvement over Cat 6 specifications, but neither are a requirement for using in a ceiling area. If the area has a lot of EMI, you might consider using STP or fiber-optic cables, but this would not be a requirement just because wires were in a ceiling area. Typically, you can avoid EMI sources by rerouting the cables.

(LS Wiring Q15): You are preparing to attach wires in a 110 block. You want to connect the wires and trim off the excess at the same time. Which of the following should you do? Select two answers only. Use a butt set with a jack. Use a punch down tool with a straight blade. Point the cut side of the tool towards the wire end. Use a punch down tool with a notched blade Use a butt set with clips. Point the cut side of the tool towards the connected end of the wire.

Point the cut side of the tool towards the wire end. *Use a punch down tool with a notched blade You would use a punch down tool to connect wires to a 110 or 66 block. When using a punch down tool, you must choose the right blade for the job:* Use a notched blade for a 110 block* Use a straight blade for a 66 block* For both blade types, you can use the end without a cutting blade if you want to punch down without cutting the wire.When using the cutting blade, point to cut side of the punch down tool towards the wire and that you want to trim.

(LS Wiring Q12): What tool should you use to extend network services beyond the demarc? Punch down tool Crimper Tone Generator Media certifier

Punch down tool A demarc is the location where the local network ends and the telephone company's network begins. This location is usually at a punch down block in a wiring closet. You use a punch down tool to attach wires to the punch down block.

(LS Coax Q02): Which of the following cable classifications are typically used for cable and satellite networking with coaxial cables? There are two correct answers. One of the correct answers is A which is RG-6. What is the other correct answer? RG-6 RG-8 RG-58 RG-59

RG-59 Both RG-6 and RG-59 can be used for satellite networking applications, although RG-6 has less signal loss than RG-59, and is a better choice for networking applications, especially where longer distances ( over a few feet) are involved. Both RG-6 and RG59 have an impedance rating of 75 ohms.RG-6 cable is one of the more common types of coaxial cables used for commercial and household purposes. RG6 should be used exclusively for satellite hookups and digital CATV. RG59 is fine for analog CATV signals but will not support the higher bandwidth used for satellite signals.

(LS Coax Q04): Which of the following cables offers the best protection against EMI? RG-6 Cat 6e Cat 5e Cat 5

RG-6 Coaxial cable offers better protection against EMI then twisted pair cables. Coaxial cable has a mesh conductor which provides a ground and protects against EMI. In general, the higher the twisted pair cable standard, the better protection against some forms of EMI (typically crosstalk). For twisted pair, use shielded twisted pair instead of unshielded twisted-pair. Use fiber-optic for the best protection against EMI.

(LS Coax Q06): F-type connectors are typically use of tables using which of the following standards (Select two answers only) Cat 5e Cat 6e RG-6 RG-58 RG-59 Cat 5

RG-6 RG-59 F type connectors are used with coaxial cable, and are typically used for cable TV and satellite installations using RG-6 or RG-59 cables. RG-58 cables typically use BNC connectors and the cables are used for 10Base2 Ethernet (thinnet) . Cat 5, 5e and 6e cables use RJ-45 connectors

(MMv2C03Q07): What are types of coax cabling that have been used in computer networking? (Select three.) RG-8 RG-45 RG-58 RG-62

RG-8 RG-58 RG-62

(LS Fiber Q04): Which of the following connectors for Fiber Optic Cables usually require polishing as part of the assembly process? (Select two answers only. You must have both answers correct for credit. There is no partial credit for this question) IDC SC AUI ST BNC

SC ST The fiber optic cable assembly process is more complex than others assemblies. It is necessary to polish the exposed fiber tip to ensure that light is passed on from one cable to the next with no dispersion. SC and ST are the only two types of Fiber Optic cables in the answers presented.

(LS Fiber Q01): Which of the following forms of optical fiber would usually be used to connect two buildings across campus from each other, which are several kilometers apart? Single Mode Dual Mode Multimode Fiber Channel Mode

Single Mode In this scenario, use single mode fiber optic cables. Fiber optic is graded as single mode or multimode. Single mode consists of a single very thin core which produces fewer reflections. This provides greater effective bandwidth over greater distancesMulti-mode is less costly than single mode. Multi-mode transmits multiple light rays concurrently. Multimode is used to transmit over shorter distances as the rays can tend to disperse as the transmission distance increases. Fiber Channel is a network topology used in storage area networks.

(LS TwistedPair Q01): Which of the following applications is more likely to justify the investment in Category 6 cable? Printing Email Instant Messaging Streaming Video

Streaming Video Category 6 cable is specified to extend the available bandwidth from 100 Mhz to 200 Mhz. This serves as the basis for greater capacity, throughput and reliability. Producing high quality streaming multimedia usually requires consistent high speed network bandwidth.E-mail and messaging are typically low bandwidth applications consisting of small, brief transmissions. Printing typically consist of greater amounts of data being transferred, however printing is highly amenable to the delays and buffering and usually will not suffer any noticeable effects with decreased bandwidth.

(LS Fiber Q03): Which of the following is true about single mode fiber optic network cabling? It transmits multiple rays of light concurrently. The central core is smaller than that of multi-mode fiber optic cable. The central core is composed of braided plastic or glass fibers. It's less expensive than multi-mode fiber optic cabling. It doesn't support segment lengths which are as long as those supported by multimode fiber optic cabling

The central core is smaller than that of multi-mode fiber optic cable. Single mode fiber optic cabling transmits a single ray (or mode) of light through glass or plastic fiber. (This is different than in statement C). It supports longer transmission distances than multimode fiber optic cable and is also more expensive. It also has a central core that is much smaller than that of multimode fiber-optic cabling.

(MMv2C03Q12): Why must the main cable in a bus topology be terminated at both ends? To allow the signal to be amplified so it can reach both ends of the network To prevent the signal from dropping off the network before reaching all computers To prevent the signal from bouncing back and forth To convert the signal to the proper format for a bus network

To prevent the signal from bouncing back and forth

(MMv2C03Q16): The IEEE 802.5 refers to which subcommittee? Ethernet Wireless Token Ring Token Bus

Token Ring

(TRANS Q2-1-3): You must propose a cabling scheme for your company's new location. Several departments are located on the same floor with a maximum distance of 61 meters (200 feet) between departments. You want a relatively easy, low-cost installation with simple connections. Which type of cabling would you propose? ThinNet ThickNet Fiber -optic Twisted -pair

Twisted -pair Twisted -pair cabling is the least expensive cabling media. Because unshielded twisted -pair (UTP) is commonly used in telephone systems, it is mass -produced, making it inexpensive and widely available. In addition, twisted -pair cabling is very easy to work with, meaning that very little training is required for its installation.As in telephone systems, twisted -pair cabling uses Registered Jack (RJ) connectors to connect cables to components. Computer networks use the larger RJ -45 connectors, which are very similar to the commonly known RJ -11 connectors used in telephone systems; this adds to the simplicity of installing twisted -pair.Twisted -pair has a maximum length of 100 meters (328 feet), which will work for the company in the scenario because the offices are located within 61 meters (200 feet) of each other. It is important to note that twisted -pair is the networking -cable type most susceptible to attenuation, which is why its maximum distance is 100 meters (328 feet).

(MMv2C03Q02): John was carrying on at the water cooler the other day, trying to show off his knowledge of networking. He claimed that the company had installed special cabling to handle the problems of crosstalk on the network. What kind of cabling did the company install? Coaxial Shielded coaxial Unshielded twisted pair Fiber optic

Unshielded twisted pair The company most likely installed unshielded twisted-pair (UTP) cabling. The twists reduce interference known as crosstalk.

(LS Wiring Q03): Which of the following methods would you use to create a crossover cable? Use the T568A standard on one connector, and the T568B standard on the other connector. Use the T568B standard Use the T568B standard on one connector, and the BLOG convention on the other connector Use the T568A standard on one connector, and the BLOG convention on the other connector. Use the T568A standard.

Use the T568A standard on one connector, and the T568B standard on the other connector. The easiest way to create a crossover cable is to arrange the wires in the first connector using the T568A standard and arrange the wires in the second connector using the T568B standard. A crossover cable connects the transmit pins on one connected to the receive pins on the other connector (pin1 to pin3 and pin2 to pin 6)

(LS Wiring Q09): You are connecting Cat5e cables to a 110 block. In what order should you connect the wires to file as standard wiring conventions? White/orange, orange, white/green, blue, white/blue, green, white/brown, brown White/green, green, white/orange, blue, white/blue, orange, white/brown, brown White/brown, brown, white/blue, blue, white/orange, orange, white/green, green White/blue, blue, white/orange, orange, white/green, green, white/brown, brown

White/blue, blue, white/orange, orange, white/green, green, white/brown, brown When connecting data wires on a 110 block, you typically connect wires in the following order:* white wire with a blue stripe, followed by the solid blue wire* white wire with an orange stripe, followed by the solid orange wire* white wire with a green stripe, followed by the solid green wire* white wire with a brown stripe, followed by the solid ground wire. Use BLOG (blue, orange, green) to remember the wire order, and remember to start with the white striped wire first.When adding RJ-45 connect this to a drop cable, use one of the following orders, based on the standard you want to follow:* T568A-To use this standard, arrange the wires from pins 1 to 8 in each connector in the following order GW,G,OW,B,BW,O,BrW,Br* T568B- To use this standard, arrange the wires from pins 1 to 8 in each connector in the following order OW,O,GW,B,BW,G,BrW,Br.

(LS Wiring Q02): you want to use the T568A standard for ending connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector? White/green, green, white/orange, blue, white/blue, orange, white/brown, brown White/orange, orange, white/green, green, white/blue, blue, white/brown, brown White/blue, blue, white/orange, orange, white/green, green, white/brown, brown White/orange, orange, white/green, blue, white/blue, green, white/brown, brown

White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

(MMv2C03Q18): When your network has all computers connected to a centrally located wiring closet, you will have created which of the following types of networks? (Select best answer) a physical star topology network. a physical bus topology network a logical ring topology network a physical ring topology network a logical star topology network

a physical star topology network.

(TRANS Q2-1-5): Which cable type consists of an inner conductor core made of solid copper surrounded by insulation, a braided metal shielding, a second conductor, and an outer cover? coaxial fiber -optic shielded twisted -pair unshielded twisted -pair

coaxial Coaxial cable has two conductors. These two conductors share the same axis, providing the derivation of the name "coaxial." The inner conductor is covered by foam insulation. This insulation is covered by a braided metal shielding that protects the signal from crosstalk. A second conductor covers the shielding, which is covered by a non -conducting plastic encasement, providing protection for the cable.Coaxial cable comes in two varieties: ThinNet and ThickNet. ThinNet cable is .64 centimeters (.25 inches) thick and carries signals up to 185 meters (607 feet). ThickNet is 1.27 centimeters (.5 inches) thick and carries signals up to 500 meters (1,640 feet).

(TRANS Q2-1-4): Which type of network media is the least susceptible to interference or signal capture? coaxial fiber-optic shielded twisted -pair unshielded twisted -pair

fiber-optic Fiber-optic cable carries its signals in the form of modulated pulses of light. Because fiber -optic uses light pulses rather than electric signals, it is virtually impossible to intercept the signal without interrupting it and, thus, being detected.In addition, fiber -optic cable is not susceptible to interference. It can span distances of up to 2 kilometers, or 2,000 meters (6,562 feet), and transmit data at a rate in excess of 100 Mbps. However, fiber -optic cable is the most expensive type of networking cable.

(MMv2C03Q17): CAT 5e cable is a type of which kind of cabling? unshielded twisted-pair (UTP) wiring shielded twisted pair (STP unshielded coaxial (UCoax) Shielded coax RG-58

unshielded twisted-pair (UTP) wiring