Network

Question 1

Internet Service Providers

Answer 1

A company that provides subscribers with internet access

Question 2

WAN

Answer 2

Wide Area Network

Question 3

Fiber vs. Coax (Cable) Internet

Answer 3

25% faster on average than cable. Fiber: many people can access the fiber network at the same time without affecting the overall performance. Fiber internet: requires fiber-optic cable. Cable internet: requires a coaxial cable.

Question 4

Upload/Download Speed

Answer 4

Download speed: rate that digital data is transferred from the internet to your computer.
Upload Speed: rate that digital data is transferred form your computer to the internet

Question 5

Public IP Meaning

Answer 5

IP address that can be accessed directly over the internet and is assigned to your network router by your internet service provider (ISP)

Question 6

Primary Secondary

Answer 6

Limited function in the TCP/IP network. Places 2 logical networks (primary secondary network, primary address and secondary address in one physical network (LAN controller) and TCP/IP routing between each logical network

Question 7

Low Voltage Cabling (Ethernet)

Answer 7

Fiber optic cable that handle Ethernet connections. Cat5 & Cat6 cables handle Ethernet connection. RG-6 that handle internet connections in addiction to cable & satellite TV

Question 8

DHCP

Answer 8

Dynamic Host Configuration Protocol: Client/server protocol that automatically provides an Internet Protocol (IP) and other related configuration information such as the subnet mask and default gateway

Question 9

LAN

Answer 9

Local Area Network. Series of computers linked together to form a network in a circumscribed location. Can be connected via TCP/IP Ethernet or WiFi. Typically exclusive to an organization, such as a school, office, association or church

Question 10

DHCP: Function

Answer 10

Operations tasks are reduced: no need to manually configure each client before they can use the network. IEP addressing plan is optimized: addresses no longer being used are freed up and made available to new clients. User mobility is easily managed: administrator doesn’t need to manually reconfigure a client when its network point changes.

Question 11

DHCP: Subnets

Answer 11

Known as a DHCP pool: A DHCP configured to hand out IP addresses on a subnet.

Question 12

DHCP: Static vs. Lease

Answer 12

Static: IP address does not change
Dynamic Lease: IP address can be changed at any time

Question 13

DNS

Answer 13

Domain Name System: managing and mapping between names and number
DNS servers translate requests for names into IP addresses controlling which server an end user will reach when they type a domain name into their web browser.
Requests= Queries

Question 14

DNS: Internal

Answer 14

Internal: may provide a firewall to resolve (or forward requests) in your internal LAN

Question 15

DNS: External

Answer 15

External DNS is the public DNS that resolves the domain request from internet.

Question 16

VLAN

Answer 16

Logical overlay network that groups together a subset of devices that share a physical LAN; isolating the traffic for each group.

Question 17

VLAN: Purpose

Answer 17

Allows network administrators to autmatically limit access to a specified group of users by dividing workstations into different isolated LAN Segments.

Pro: when users move their work stations, administrators don’t need to reconfigure the network or change VLAN groups.

Question 18

VLAN: Cases of Use

Answer 18

Main use: Security

Isolate users into their own network by isolating a certain number of point from switch and pitting them into their own group

Question 19

Firewall

Answer 19

Network security device that monitors and filters incoming/ outgoing network traffic based on an organizations previously established security policies.

Barrier between private internal network and the public internet

Question 20

Firewall: Security Definition

Answer 20

Firewall can refer to hardware or software. Limits access to internal networks & protect them from internal/external dangers.

Question 21

Firewall as a service

Answer 21

(FWaaS) security solution based on a cloud firewall that delivers advanced Layer 7/ next-generation firewall (NGFW) capabilities:

Access controls such as URL. Filtering, advanced threat prevention, intrusion prevention system (IPS) and DNS security

Question 22

Network: Switch

Answer 22

Forwards data packets between devices. Switches send packets directly to devices, rather than send them to to networks like a router

Question 23

Network Switch: SNMP

Answer 23

Simple Network Management Protocol: application-layer protocol for monitoring and managing network devices on a local area network (LAN) or wide area network (WAN)

Question 24

Network Switch: PoE

Answer 24

Power over Ethernet functionality built into it: devices can be powered by network cables.

PoE switch: provides power that can be used to run other devices via the Ethernet cabling

Question 25

Wireless: SSID

Answer 25

Service Set Identifier “Network Name” typically found on router near bar code on router

Question 26

Wireless: Corporate vs. Guest network

Answer 26

Difference: type of firewall rules automatically created. Corp. allow inter-vlan routing

Question 27

VPN

Answer 27

Virtual Private Network: describes the opportunity to establish a protected network connection when using public networks. VPNs encrypt internet traffic and disguise your online identity. Makes it more difficult for third parties to track your activities online and steal data

Question 28

VPN: Remote Access

Answer 28

VPN remote access: enables users who are working remotely. Essentially a secure network line from a user to applications