Network Devices

Question 1

Routers
* Routes traffic between __ ____
Which layer of the OSI model

Answer 1

IP subnets:divide a larger network into smaller, more manageable segments
Internet Protocol subnetworks
Layer 3 Network Layer

Question 2

Routers connect IP subnets using the same topology but they also connect __ __ __ __

Answer 2

LAN “Local Area Network.
, WAN “Wide Area Network
, copper, fiber

Question 3

A Switch determines where traffic should be forwarded based on ____

Answer 3

Destination MAC address
(Media Access Control) address

Question 4

Switches have _____ (ASIC)
form factor___
Power_____

Answer 4

Application-specific integrated circuit
designed to perform a specific application or function.
Small form factor
low power

Question 5

Switches may provide PoE
stands for ____

Answer 5

Power over Ethernet

technology that allows electrical power to be transmitted alongside data over Ethernet cables. It was developed to simplify the deployment of network devices, particularly in situations where it may be challenging or impractical to provide a separate power source for those devices.

Question 6

Layer 3 switch or multilayer switch refers to

Answer 6

a switch that includes routing functionality

Question 7

Unmanaged switches have very few_____
No_____

Answer 7

configurations
VLANs

Virtual Local Area Network, is a network technology that allows you to logically segment a physical network into multiple virtual networks. Each VLAN operates as if it were its own separate network, even though the devices may physically share the same network infrastructure, such as switches and cables.

Question 8

Unmanaged switches don’t have SNMP
Stand for _____
network admins can’t _____

Answer 8

Simple Network Management Protocol
can’t query performance reports out of switches

Question 9

What is a VLAN

Answer 9

Virtual Local Area Network)
create logical, isolated networks within a physical network infrastructure.VLANs enable the segmentation of a larger network into smaller, separate broadcast domains, even if the devices are physically connected to the same network equipment, such as switches

Question 10

A managed switch allows different interfaces to be of different IP subnets (VLANs)
what does this mean

Answer 10

it means that the switch can support the creation and management of multiple isolated network segments within a single physical switch. Each of these isolated segments is referred to as a VLAN (Virtual Local Area Network), and they can have distinct IP address ranges, effectively creating separate logical networks.

Question 11

Can you configure traffic prioritization on a managed switch

Answer 11

Yes
Ex. voice traffic gets a higher priority

Question 12

• Redundancy support
  – Spanning Tree Protocol (STP)
  What is it how does it help
  you need a ____ to have this feature

Answer 12

is a network protocol used to prevent loops in Ethernet networks, particularly in networks with redundant links between switches.

Managed switch

Question 13

What is the protocol used to prevent network loops
STP

Answer 13

Spanning tree protocol

Question 14

What is port mirroring in managed switches

Answer 14

a way to monitor network traffic passing through a switch/ports
used for troubleshooting something that may have gone wrong with a package
copies network traffic from one or more source ports to a designated destination port, which is typically connected to a monitoring device,

Question 15

What is an access point
makes forwarding decisions backed on __

Answer 15

It connects to the wifi router via eithernet cable and placed throughout the office to Extend the wifi to devices further from the router
Makes forwarding decisions based on MAC address

Question 16

What is a patch panel

Answer 16

• Combination of punch-down blocks and RJ-45 connectors
• Runs from desks are made once
  The median between computers and switches

Question 17

Which layer in the open system interconnection model is a firewall a part of

Answer 17

Layer 4 transport layer
(TCP/UDP)

Question 18

Firewalls filter what can pass through base on an access control list, what this list consists of is determined by the network admin this include which
_______ and _____ will be allowed though

Some firewalls can filter based on _____
In those cases the firewall would be considered a layer_____

Answer 18

IP addresses and port numbers
Some firewalls can filter based on the application
Layer 7 the Application Layer

Question 19

Firewalls can ___ traffic into/out of the network
They can ____ traffic
They can also act as a ____ making them a layer ____ as well

Answer 19

Encrypt
Proxy
Router
Layer 3

Question 20

either-net cables can also ____ PoE
Often the power comes from the ____ we refer to this as ___ _____
If the _____ doesn’t support PoE you’ll need something in the middle of that connection we refer to in this as PoE ____ and often referenced as ___

Answer 20

Power over ethernet
Switch
end span
switch
Injector
mid span

Question 21

before there where switches we commonly used ____ to connect our devices
Also known as a ____

Answer 21

Hub
Muli-port repeater– Traffic

Question 22

Hubs
Everything is half__
becomes less efficient as __
Hubs are available in ____ and ____ speeds

Answer 22

half-duplex:efers to a mode of communication where data transmission can occur in only one direction at a time on a network segment

traffic increases* Difficult to find today*

10 megabit / 100 megabit

Question 23

Cable modems allow you to communicate over ____
Is there more then one signal being used over the same wire?

Answer 23

Broadband
Yes
you use this modem for internet through your cable provider

Question 24

A ADSL modem is used for internet provided via ___ company
Uses ___ lines for internet ________ is faster than the ________ (asymmetric)
_______ foot limitation from the central office (CO)
Speed downstream?
speed upstream?

Answer 24

Asymmetric Digital Subscriber Line)
Phone
phone
Download speed is faster than the upload
speed (asymmetric)
10k
52megabit downstream
16 megabit upstream

Question 24

Cable modem
on the “cable” network
DOCSIS
High-speed networking of up too __
what are the 3 services?

Answer 24

Data Over Cable Service Interface Specification)
1 gigabit
Data, voice, video

Question 25

To connect to internet via fiber optic cable you have to use ONT

Answer 25

Optical network terminal
device used in fiber-optic communication networks to terminate the optical fiber and provide various services
converting the optical signal into electrical signals that can be used by devices within a home or business.

Question 25

Using optical network terminal
Connect the ___ network to the ____ network
ONT is usually located ?
Demarcation point in the data center?

Answer 25

you can connect the fiber-optic network to the local area network (LAN) or home network

outside of building

marks the separation between a service provider’s responsibility and the customer’s responsibility for network equipment, cabling, and services.

Question 26

Network Interface Card (NIC)
What is it?

Answer 26

hardware component that allows computers and other devices to connect to a network and communicate with other devices over that network

handle tasks such as sending and receiving data packets, managing network connections, and handling network protocols like Ethernet, Wi-Fi, and TCP/IP

Question 26

Network Interface Card (NIC) are located where

Answer 26

Built into the mother board
or often have separate added as an expansion card

Question 27

what is the difference between subnets and Vlans

Answer 27

Subnets
- create smaller networks physically by using routers
- each subnet have they’re own broadcast domain

Vlans
- created using a vlan switch with assigned ports without adding routers