Testout 2.1 - Twisted Pair

/UTP Cable Types/

- Phone Cable - Cat 3 - Cat 5 - Cat 5e - Cat 6 - Cat 6a - Cat 7

Which of the following cable types would you most likely use to connect to a T1 WAN service? A. RJ48c B. RJ45 C. RJ11 D. GG45

A. RJ48c

Crosstalk?

An unwanted transfer of signals between communication channels.

Cat 3

Connector: RJ-45 Designed for use with 10 megabit Ethernet or 16 megabit token ring

Which of the following cable types often includes a solid plastic core that keeps the twisted pairs separated? A. Cat 3 B. Cat 5 C. Cat 5e D. Cat 6

D. Cat 6 - it includes a solid plastic core that keeps the twisted pairs separated and prevents the cable from being bent too tightly

STP (Shielded Twisted Pair)?

Shielding is electrically conductive foil or braided material that is wrapped around pairs of wires, around the overall cable, or both.

Each type of UTP cable can be substituted for any category below it, but never for a category above.

- Cat 6 can be substituted for a standard requiring Cat 5e., but never for the category above - neither Cat 5 nor Cat 3 can be used in a situation where Cat 6 is required. The exception is Cat 7 cabling, and then only when Cat 7 is terminated with TERA connectors.

RJ11

- Has four connectors. - Supports up to two pairs of wires. - Uses a locking tab to keep the connector secure in an outlet. - Used primarily for telephone wiring.

/Connector Types:/

- RJ11 - RJ45 - GG45 - TERA

Riser Space...

Designed for installations that run between floors. More Facts: · Riser requirements are not as strict as plenum requirements o Plenum rated cables can be used in riser spaces. o Riser rated cables must never be used in plenum spaces.

UTP (Unshielded twisted Pair)?

These cables are easy to work with and less expensive than shielded cables.

Two Common abbreviations for twisted pair cables:

UTP and STP

UTP?

Unshielded Twisted Pair, see definition in the Terms list

When will you typically use an RJ11 connector?

When connecting a phone to a phone line

Plenum Space?

part of a building that provides a pathway for the airflow needed by heating and air conditioning systems, such as above a dropped ceiling or below a raised floor.

Plenum Space...

see definition above in terms More facts: · Plenum rated cables use insulation that is fire resistant and non-toxic when burned. · Plenum rated cables must be used in plenum spaces.

Riser Space?

An area that connects multiple floors where cables can be run. This area cannot be a plenum space.

Which of the following connectors is used with Ethernet 100BaseT networks? A. BNC B. RJ45 C. RJ11 D. ST

B. RJ45

Why might you use an RJ11 connector? A. You want to connect the 10BaseT network card in your computer to a switch B. You want to connect your computer to the internet with a DSL modem C. You want to upgrade your 10BaseT network to the 100BaseTX D. You want to test a network cable to see if there is a break in the line

B. You want to connect your computer to the internet with a DSL modem

Phone Cable

Connector: RJ-11 used to connect a PC to a phone jack in a wall outlet to establish a dial-up internet connection. It is also used to connect a DSL modem to a telephone network. It has two pairs of twisted cable (a total of 4 wires).

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? A Fiber optic B pvc C srp D Plenum E Cat 5e or Cat 6e

D. Plenum rated cable

When connecting a modem to a phone line, connect the modem to the wall jack using the line port on the modem. Then ...

connect the phone to the phone port on the modem. This allows you to use the phone or the modem through a single connection.

*Lab 2.1.3 Connect to an Ethernet Network*

https://www.youtube.com/watch?v=7Hb678tBrY8&ab_channel=ThomasSovogui

Cat 5

Connector: RJ-45 supports 100-megabit Ethernet (100BASE-TX) and ATM networking. Cat 5 specifications also support gigabit (1000 Mb) Ethernet

Cat 6a

Connector: RJ45 designed to provide better protection against EMI and crosstalk than Cat 6 cabling. Cat 6a provides better performance than Cat 6, especially when used with 10-Gbps Ethernet (10GBASE-T).

Cat 5e

Connector: RJ45 similar to Cat 5 but provides better EMI protection. It supports 100-megabit (100BASE-T) and gigabit (1000BASE-T) Ethernet.

Cat 6

Connector: RJ45 supports 10-Gbps Ethernet (10GBASE-T) and high-bandwidth broadband communications. In most cases, Cat 6 cables include a solid plastic core that keeps the twisted pairs separate and prevents the cable from being bent too tightly.

Cat 7

Connectors: GG45 and TERA This standard was ratified years before the Cat 6a standard to support 10-Gbps Ethernet (10GBASE-T). It requires shielding on each twisted pair and the cable as a whole. It also specifies the GG45 or TERA connectors.

You are installing network wiring for a new Ethernet network at your company's main building. The project specifications call for Cat 5e UTP network cabling and RJ45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Cat 3 network cable in storage. Upon investigation, it appears very similar to Cat 5e wiring. Should you use Cat 3 cabling as a substitute for Cat 5e cabling to finish the project?

No. Cat 5e cabling has more twists per inch than Cat 3 cabling, reducing cross-talk and supporting higher data rates.

Specially manufactured twisted pair cables are used in...

Plenum and Riser Space

STP?

Shielded Twisted Pair. See definition in terms. More facts about shielded twisted pair: - Shielding is electrically conductive foil or braided material that is wrapped around pairs of wires, around the overall cable, or both. - Shielding helps to minimize crosstalk. - The main purpose of shielding is to minimize the effects of EMI from external sources, such as fluorescent light ballasts. - The shielding can be used as a ground. However, most shielded cables have a special grounding wire called a drain wire.

Advantages of twisted pair cabling include:

· Flexibility--you can run twisted pair cabling around tight corners and other places where other types of network cable simply cannot go without being damaged. · Cost--twisted pair cabling is less expensive than other types of network cabling. · Ease of use--twisted pair cabling is easy to work with, and it's much easier to install compared to other types of network cabling. · Works with newer protocols--newer, faster network protocols and standards have been designed to run on twisted pair cabling.

GG45

· Has eight connectors. · Supports four pairs of wires. · Backwards compatible with RJ45. · Four additional conductors in the corners of the connector that duplicate and replace the four inner pins on the RJ45.

TERA

· Has eight connectors. · Supports four pairs of wires. · Incompatible with RJ45 and GG45. Does not require special tools to install.

RJ45

· Has eight connectors. · Supports up to four pairs of wires. · Uses a locking tab to keep the connector secure in an outlet. · Used for Ethernet and some token ring connections. NOTE: There is another connector type called RJ48c that is almost identical to RJ45. RJ48c uses the same connector as an RJ45, but it is used for specific WAN connections, such as a T1 line, and is wired differently.

Twisted pair cables can be solid or stranded

· Solid wires conduct electrical signals better, but are prone to break when they are repeatedly bent. · Stranded cables are more flexible, but don't carry signals as well. · Use solid cables in permanent and semi-permanent installations. · Use stranded cables for patch cords and when cables are frequently moved.

Disadvantages of twisted pair cabling:

· Susceptible to interference--the sheath around twisted pair cable is relatively thin, making it susceptible to EMI. · Susceptible to eavesdropping--with the right equipment, you can pick up signals emanating from the wire.

Twisted pair cables support a wide variety of fast modern network standards.

· Two copper conductors form a path for an electrical signal with each wire carrying an equal but opposite signal. · The wires are twisted to reduce crosstalk, which is the absorbed signals from another pair. · The conductors are 22- to 24-gauge in thickness and are covered in plastic insulation. · Pairs are color coded, bundled together, and covered in a plastic jacket or sheath. · Most cables contain four twisted pairs. · Cables may contain 25 or 100 pairs when used in larger wiring applications. · Each pair within a length of cable are given a different number of twists to further reduce the effects of crosstalk.