week 3 networking

Question 1

what are the two types of cables?

Answer 1

copper and fiber optic

Question 1

what are the two types of cables?

Answer 1

copper and fiber optic

Question 2

two types of copper cables?

Answer 2

coaxil and twisted pair

Question 3

coaxial vable

Answer 3

contains a central conducter wire surronded by an insulating material which is surronded by a braided meal sheild
it is called coaxil because the center wire and braided metel sheild share a centerline

coaxlee sheilds data transmission from interference

early bus topologies used coaxel cable usuing bnc connectors

today it is used a cable modem to connect too an isp which use an F connector the same used for TVS

Question 4

EXAM TIP Coaxial cabling is also very popular with satellite dishes, overthe-air antennas, and even some home video devices. This book covers
cable and other Internet connectivity options in great detail in Chapter 13,
“Remote Connectivity.”

Question 5

twisted pair

Answer 5

transmitting or reciving data works in a pair
reduces cross talk

Question 6

shieldied twisted pair

Answer 6

twisted pair surronded by sheilding

Question 7

utp

Answer 7

unsheilded twisted pair surropnded by a plastic jacket does not have any protection from interfernece

Question 8

Cat 3 16 MHz 16 Mbps Recognized
Cat 4 20 MHz 20 Mbps No longer recognized
Cat 5 100 MHz 100 Mbps No longer recognized
Cat 5e 100 MHz 1 Gbps Recognized
Cat 61 250 MHz 10 Gbps Recognized
Cat 6a2 500 MHz 10 Gbps Recognized
Cat 7 600 MHz 10+ Gbps Not recognized
Cat 7a3 1000 MHz 40–100 Gbps Not recognized
Cat 8 2000 MHz 25–40 Gbps Not recognized
1Cat 6 cables can use the full 100-meter length when used with 10/100/1000BaseT networks. With 10GBaseT netwo

Question 9

maximum amount of data that goes through the cable is called

Answer 9

bandwith

Question 10

EXAM TIP The CompTIA Network+ exam is only interested in your
knowledge of Cat 3, Cat 5, Cat 5e, Cat 6, Cat 6a, and Cat 7 cables. Further,
you’ll see the abbreviation for category in all caps, so CAT 5e or CAT 6a.
(In the field you’ll see category represented in both ways.)

Question 11

bandwith efficent encoding sheme

Answer 11

squuese more bits into the same singal as long as the cable cqn handle it

Question 12

bandwith efficent encoding sheme

Answer 12

squuese more bits into the same singal as long as the cable cqn handle it

Question 13

modern day cables use cat 6a or cat 7

Question 14

rj

Answer 14

registerd jack

Question 15

telephones used rj 11

Question 16

rj11 supportstwo parts of typ wires

Question 17

current wired networks use 4 pair 8p8c connecters thatmost people refer to as a rj45

Question 18

EXAM TIP CompTIA follows the common usage for networking cable
connectors. You will not see 8P8C on the exam; you will only see RJ-45.

Question 19

fiber-optic cable has four components: the glass fiber itself (the core); the cladding, which
is the part that makes the light reflect down the fiber; buffer material to give strength; and
the insulating jacket (Figure 2-22).

Question 20

The most common fiber-optic
cable size is 62.5/125 µµm.

Question 21

use pairs of fibers one for sending one for reciving which create dublex fiber oprtic cabling

Question 22

regular ligh and laser ligh require different optic cables

Question 23

multimode fiber uses leds

Question 24

single mode fiber uses lasers

Question 25

modal disotoration

Answer 25

when signals sent at the same time dsont arriave at the same time

Question 26

serial connections

Answer 26

rs232 db9

Question 27

serial connections

Answer 27

rs232 db9

Question 28

parellel

Answer 28

25 pin female db -25

Question 29

EXAM TIP Concentrate on UTP—that’s where the hardest CompTIA
Network+ exam questions come into play. Don’t forget to give coax, STP,
and fiber-optic a quick pass, and make sure you understand the reasons
for picking one type of cabling over another. Even though the CompTIA
Network+ exam does not test too hard on cabling, this is important
information that you will use in real networking.

Question 30

netowrking industry standards ieeee

Answer 30

institute of electricals and elctronics engineers
provided a varity of cables as no single cable type could work in every situation

Question 31

IEEE 802.1 Higher Layer LAN Protocols (with many subcommittees, like 802.1X for
port-based network access control)
IEEE 802.3 Ethernet (with a ton of subcommittees, such as 802.3ae for 10-Gigabit Ethernet)
IEEE 802.11 Wireless LAN (WLAN); specifications, such as Wi-Fi, and many subcommittees
IEEE 802.15 Wireless Personal Area Network (WPAN)
IEEE 802.18 Radio Regulatory Technical Advisory Group
IEEE 802.19 Wireless Coexistence Working Group
IEEE 802.20 Mobile Broadband Wireless Access (MBWA); (in hibernation)
IEEE 802.21 Media Independent Handover Services
IEEE 802.22 Wireless Regional Area Networks