1.5

Question 1

What is a physical network map?

Answer 1

A map that follows the physical wire and device. It also include the same in a rack.

Question 2

What is a logical network map?

Answer 2

Specialized software useful for planning and collaboration to be used in high level views.

Question 3

What is a Star topology?

Answer 3

It’s a topology used in most large and small networks where all devices are connected to a central device like a switch.

Question 4

What is a RIng topology?

Answer 4

It’s a topology still used in many MANs and WANs where all of the devices are connected to each other like a ring form.

Question 5

What is a Mesh network?

Answer 5

Its a topology where there are multiple links to the same place for redundancy, fault-tolerance and load balancing. Mostly used in WANs.

Question 6

What is a Bus network?

Answer 6

It’s atopology used in local area networks which is simple but prone to errors and mostly used in a vehicle CAN bus (Controller Area Network).

Question 7

What are some wireless logical topologies?

Answer 7

1. Infrastructure
2. Ad hoc networking
3. Mesh

Question 8

What is the most common wireless communication mode?

Answer 8

Infrastructure (all devices communicate through an access point)

Question 9

What is Ad hoc networking?

Answer 9

It’s a wireless logical topology where device communicate amongst themselves without an access point (No pre-existing infrastructure).

Question 10

What’s a logical Mesh topology?

Answer 10

It’s a network topology where Ad hoc devices work together to form a mesh “cloud”.

Question 11

Whats the advantage of logical mesh compared to other wireless topologies?

Answer 11

It self forms and self heals.

Question 12

Whats a LAN?

Answer 12

A network in a building or group of buildings which is high-speed connectivity. (Local Area Network)

Question 13

What are the types of a LAN?

Answer 13

1. Ethernet

2. 802.11 wireless

Question 14

Whats a WLAN?

Answer 14

It’s the wireless LAN which uses 802.11 technology and you can expand expand coverage with additional access points.

Question 15

Whats a MAN?

Answer 15

It’s a network in the city which is larger than LAN but smaller than WAN which is common to see them in government ownerships (Metropolitan Area Network)

Question 16

Whats a WAN?

Answer 16

A network that is spanning the globe and usually connects LANs across a distance but generally slower than LANs. (Wide Area Network)

Question 17

What are some examples of WAN technologies?

Answer 17

1. Point-to-point serial
2. MPLS
3. Satellite communications

Question 18

What is a CAN?

Answer 18

(Campus Area Network) It’s a limited geographic area network using LAN technologies to create a network within a few building close to each other.

Question 19

What technology does a CAN use?

Answer 19

LAN technologies like a fiber connected or high speed Ethernet but there is no need for a third party provider.

Question 20

What is a NAS?

Answer 20

(Network Attached Storage) Its a network connected to a shared storage device across the network, also called File-level access.

Question 21

What is a SAN?

Answer 21

(Storage Area Network) It’s a network that looks and feels like a local storage device but it’s very efficient for reading and writing. Also called Block-level access.

Question 22

What do NAS and SAN require?

Answer 22

A lot of bandwidth

Question 23

What is a PAN?

Answer 23

(Personal Area Network) user’s own private network

Question 24

What are some examples of PAN?

Answer 24

Bluetooth, IR, NFC and they get used in an automobile, mobile phones and health devices like a workout telemetry.

Question 25

What is IoT used for?

Answer 25

1. Wearable technologies (like watches, glasses, health monitors)
2. Home automation (like video doorbells, Internet-connected garage door openers, heating and cooling systems)

Question 26

What is Z-Wave used for?

Answer 26

Home automation networking

Question 27

What kind of networking and technology does Z-Wave use?

Answer 27

Wireless mesh networking and it uses the ISM band

Question 28

T/F) Z-Wave is uses 800 MHz frequencies.

Answer 28

False, It uses 900 MHz frequencies and thats why there is no conflict with 802.11.

Question 29

What is ANT/ANT+?

Answer 29

It’s a wireless sensor network protocol which uses 2.4 GHz ISM band and it’s used in fitness devices or heart monitors.

Question 30

T/F) ANT/ANT+ is a 802.11 connection.

Answer 30

False its not either bluetooth or 802.11 but it doesn’t require any encryption.

Question 31

What is Bluetooth?

Answer 31

It’s a high speed communication PAN over short distances that connects our mobile devices.

Question 32

What are some bluetooth connection devices?

Answer 32

Smarthphones, tethering, headsets and headphones, health monitors, smartwatches, automobile and phone integration and external speakers.

Question 33

What is NFC?

Answer 33

(Near Field Communication) It’s a 2 way wireless communication.

Question 34

What is NFC used for?

Answer 34

1. It is used in payment systems (Major credit cards and online wallets)
2. Bootstrap for other wireless like bluetooth pairing.
3. Access token, Identity card

Question 35

What is IR?

Answer 35

(Infrared) it is included on many smartphones, tablets and smartwatches and mostly is used to control entertainment center systems.

Question 36

What is RFID and what is it used for?

Answer 36

(Radio Frequency Identification) Its a technology almost everywhere these days like Pet identification, access badges and Radar or anything that needs to be tracked.

Question 37

How does RFID work in a radar technology?

Answer 37

1. Radio frequency transmitted to the tag
2. RF powers the tag, ID is transmitted back
3. Bidirectional communication
4. Some tag formats can be powered.

Question 38

What is IEEE 802.11?

Answer 38

Its the wireless networking managed by the IEEE LAN/MAN Standards Committee (IEEE 802)