Networking: Troubleshooting and Future of Networking

Question 1

Cloud computing

Answer 1

The concept and technological approach of accessing data, using applications, storing files, etc. from anywhere in the world as long as you have an internet connection

Question 2

Error detection

Answer 2

The ability for a protocol or program to determine that something went wrong

Question 3

Error recovery

Answer 3

The ability for a protocol or program to attempt to fix an error

Question 4

Flow label field

Answer 4

20-bit field that’s used in conjunction with the traffic class field for routers to make decisions about the quality of service level for a specific datagram

Question 5

Hop limit field

Answer 5

An 8-bit field that’s identical in purpose to the TTL field in an IPv4 header

Question 6

Host file

Answer 6

A simple text file that consists of one or more lines, each of which contains a hostname and an IP address

Question 7

Hybrid cloud

Answer 7

A cloud computing environment that combines on-premises private cloud resources with public cloud resources

Question 8

Hypervisor

Answer 8

A piece of software that runs and manages virtual machines while also offering guests a virtual operating platform that’s indistinguishable from actual hardware

Question 9

ICMP

Answer 9

Internet control message protocol is used by router or remote hosts to communicate error messages when network problems prevent delivery of IP packets

Question 10

ICMP payload

Answer 10

Piece of the packet which lets the recipient of the message know which of their transmissions caused the error being reported

Question 11

Infrastructure as a Service (IaaS)

Answer 11

A subset of cloud computing where a network and servers are provided for customers to run their services

Question 12

IPv6 tunnel brokers

Answer 12

Companies that provide IPv6 tunneling endpoints for you, so you don’t have to introduce additional equipment to your network

Question 13

IPv6 tunnel

Answer 13

IPv6 tunnel servers on either end of a connection take incoming IPv6 traffic and encapsulate it within traditional IPv4 datagrams

Question 14

Link-local unicast address

Answer 14

Allow for local network segment communications and are configured based upon a host’s MAC address

Question 15

Loopback address

Answer 15

An IP address that always points to itself. This type of address is used to test internal pathing through the TCP/IP protocols

Question 16

Multicast

Answer 16

A way of addressing groups of hosts all at once

Question 17

Next header field

Answer 17

Defines what kind of header is immediately after this current one

Question 18

Payload length field

Answer 18

16-bit field that defines how long the data payload section of the datagram is

Question 19

Platform as a service

Answer 19

A subset of cloud computing where a platform is provided for customers to run their services

Question 20

Private cloud

Answer 20

When a company owns the services and the rest of the cloud infrastructure, whether on-site or in a remote data center

Question 21

Public cloud

Answer 21

The cloud services provided by a third party

Question 22

Public DNS servers

Answer 22

Name servers specifically set up so that anyone can use them for free

Question 23

Registrar

Answer 23

An organization responsible for assigning individual domain names to other organizations or individuals

Question 24

Software as a Service (SaaS)

Answer 24

A way of licensing the use of software to others while keeping that software centrally hosted and managed

Question 25

Traffic class field

Answer 25

An 8-bit field that defines the type of traffic contained within the IP datagram and allows for different classes of traffic to receive different priorities

Question 26

Version field

Answer 26

First field in an IP header that specifies the version of IP

Question 27

Virtualization

Answer 27

A single physical machine called a host runs many individual virtual instances called guests