Section 1.2

Question 1

Describe ad hoc networking

Answer 1

When devices are connected directly to one another by either using wifi, bluetooth or NFC

Question 2

What are the three different types of wireless topologies?

Answer 2

Infrastructure, ad hoc networking, and mesh

Question 3

What’s an example of an infrastructure based wireless topology?

Answer 3

An access point

Question 4

What type of wireless topologies are IOT devices likely to use?

Answer 4

Star (Infrastructure) and Mesh

Question 5

What are three types of Personal Area Network?

Answer 5

Bluetooth, IR (Infrared) and NFC

Question 6

What are some examples of IR devices?

Answer 6

Remote controls, motion detectors, thermometer guns, and night vision cameras

Question 7

What are the main differences between NAS and SAN?

Answer 7

Network Attached Storage is like a shared folder for easy file access. It’s good for storing unchanging files.

Storage Area Network is like a highway for data, and great for big companies with higher demands. It’s good for frequently changing and updating files.

Question 8

What does MPLS stand for and how does it work?

Answer 8

Multiprotocol Label Switching.
It speeds up and prioritizes network traffic by using labels instead of entire packet headers. It also works with various data formats like IP, Ethernet, and Frame Relay.

Question 9

What is mGRE?

Answer 9

Multipoint Generic Router Encapsulation

Question 10

Why is mGRE (Multipoint Generic Routing Encapsulation) used?

Answer 10

Because it provides scalable, flexible, and dynamic VPN connections. Tunnels are created as needed from site to site.

Question 11

What are smartjacks?

Answer 11

It’s basically an advanced demarcation point that is used by the service provider to remotely monitor, diagnose, and troubleshoot network issues.

Question 12

What does NFV stand for?

Answer 12

Network Function Virtualization

Question 13

What’s the purpose of NFV (Network Function Virtualization)?

Answer 13

To replace physical network devices with virtual versions.

Question 14

What is used to deploy and manage virtual machines?

Answer 14

The hypervisor

Question 15

What is a virtual switch called and what can it do?

Answer 15

vSwitch
It has the same functionalities of a physical switch

Question 16

What’s a vNIC?

Answer 16

Virtual Network Interface Card

Question 17

How does a virtual machine connect to a network?

Answer 17

using a vNIC

Question 18

What are the pros and cons of satellite networking?

Answer 18

Great for remote locations and speeds of up to 50Mbps down/3Mbps up.

Disadvantage is high latency (up to 250ms up and down), expensive, and requires line of sight, so bad weather can negatively affect connectivity.

Question 19

What determines your network speed with DSL, and what is the max speed?

Answer 19

Your distance from the central office (CO). Max speed is around 200Mbps down and 20Mbps up.

Question 20

What is the maximum distance a DSL connection can reach?

Answer 20

Roughly 10,000 feet

Question 21

What type of line does DSL use?

Answer 21

Telephone line

Question 22

What is the range of speed for Cable?

Answer 22

50Mbps to 1,000Mbps

Question 23

How is Metro-E different from the internet?

Answer 23

It’s a dedicated and private Metro Area Network that’s often used by businesses for higher speed and reliability.

Question 24

How is Metro-optical different from Metro-ethernet?

Answer 24

Metro-optical focuses on the physical infrastructure of optical fiber. Metro-ethernet uses the infrastructure of Metro-optical for ethernet-based services.

Question 25

What are the advantages of leased lines?

Answer 25

They’re a private dedicated line that isn’t shared like DSL and Cable. They’re reliable and provide symmetrical bandwidth for download and upload.