QUIZ 2 | Introduction to Networks ITEC 3100

A computer only reads ____ signals

Digital

Signals on the Internet are ______

Analog

As analog data comes in from the internet, the modem ______ the incoming analog signals

Demodulates

A modem ______ outgoing digital signals into analog signal

Modulates

What does the word modem mean?

Modulator-Demodulator

Do you need a router if you want to connect ONE device to the internet?

No. You can plug the device directly into the modem.

What are the two types of modems?

Cable and DSL

Cable modems connect to your home using ______ cable

Coaxial

DSL Modems connect to your home using ________

any typical phone line

Most routers have a built-in ______

Switch

Wi-Fi

Allows multiple wireless and wired devices to join together in a LAN

Wireless Access Point (WAP)

relays data between a wired network and wireless devices. Essentially a wireless hub

How does a WAP relay data?

WAP → Router → Modem → Internet

A WAP is primarily used by _____ to ______ organizations.

medium to large

Why should a network only be managed by one router?

If a network admin needed to make changes, they would need to go into every single router. With WAPs, all configuration can be done in one router.

WAPs can only accept connections from ______ devices

Wireless

WiFi routers can accept connections from _______

both wired and wireless devices

Which has a firewall? WAP or WiFi Router

WiFi Router

DHCP

automatically assigns devices an IP address

True or False: WAPs have DHCP

False

How do WAPs get their IP addresses?

An organizations router. Once a device connects to the WAP, the router sends the IP through the WAP and then to the device

True or False: WAPs have WAN ports

False. They must first connect to a router, which can then be connected to a modem

What are WAPs often used for?

To further extend existing network signals

What is the purpose of a hub?

to connect all your devices together on an internal network

Why are hubs considered to be unintelligent?

they don’t filter data and don’t know where data should be sent

What happens when you send data through a hub to a specific device?

The hub copies the data to all other ports, sending it to all devices instead of just the intended device

What are the disadvantages of a hub

• data gets sent to unintended targets

• creates unnecessary traffic on the network

What is the difference between a hub and a switch?

A hub only detects a device that is physically connected to it, while a switch can detect SPECIFIC devices that are connected to it and keeps a record of the MAC address

What do hubs and switches have in common?

both are used to exchange data within a LAN and are NOT used to exchange data outside their own network

How would a device be able to exchange data outside of its own network?

A device needs to be able to read IP addresses. Neither hub nor switches can read IP addresses

True or False: A switch can read IP addresses

False

Switch

a device with multiple ports that accepts Ethernet connections from multiple devices

What makes a switch intelligent?

A switch can learn the physical MAC addresses of the devices that are connected to it and stores them in its table

What are the benefits of using a Switch over a Hub

A switch offers increased security and less network traffic

Router

routes data from one network to another based on their IP address. It determines whether a packet is for its own network (and receives it) or for a different network (sends it off)

A router is the _______ of a network

gateway

Hubs and Switches are used to ______ networks

CREATE

Routers are used to _______ networks

CONNECT

The switch in the middle is referred to as the ______ switch

Main

How much does a main switch usually cost?

$3k - $5k

What is the main switches job?

to connect the other switches to servers

Is this set up secure?

No. A computer on any side could access the server easily through the switches if they had the passwords or logins.

True or False: An organization should have a LAN connected ONLY by switches

False. A LAN connected only by switches is inefficient and not secure

What is the ideal network setup for a business?

3 smaller LANs connected by a router

What is this device called?

Cisco Router

What is this device called?

Cisco Switch

What is this device called?

Wireless Cisco Router

What is this device called?

Cisco Hub

What is this device called?

A different representation of a Cisco Hub

What is a NIC

Network Interface Card

True or False: You don’t need a network card to connect to the network

False

True or False: a NIC can be upgraded

True

What should you do if you don’t have an Ethernet slot but still want to have a wired connection to a network?

You can purchase a USB adapter or USB network card

Network Hub

Older, obsolete device that connects all wired devices

Network Switch

Newer device that connects all wired devices

Which has more ports: Hub or Switch

Switches usually have more ports and they’re usually placed on the front

What is an Uplink Port?

ports that link a switch to another switch

Which is faster: Switch or Hub

Switch

What kind of ports are located on a WiFi Router?

Regular and Uplink

What to uplink ports connect to?

a modem.

What do regular ports connect to?

computers

True or False: WiFi Routers have few ports

True

Where are the ports located on a Wired Router

all ports are located in the back

How many ports MAX does a Wired Router have?

8 ports

What does a modem do?

Provide internet access

What’s a good indicator that a device is a modem?

having lights at the front

How are switches, routers, and modems usually connected in a business using a WIRED connection?

laptop → switch → router → modem → Internet

How are switches, routers, and modems usually connected in a business using a WIRELESS connection?

laptop → WAP → switch → router → modem → Internet

At home, how are a modem, switch, and router usually connected?

laptop → WIRELESS router → modem → Internet

OR

laptop → GATEWAY → Internet

Gateway

a combination of a modem and a wireless router

True or False: having a separate router and modem is more secure than having a gateway

True. a gateway has less customization

What does it mean when we say “flooding the ports”?

Sending data to all ports (24, 32, 48)

Which device is always flooding ports

Hubs

Which device only floods ports when necessary?

Switches

What is the difference between a switch and a router?

a switch connects DEVICES and a router connects NETWORKS

Which device only understands MAC addresses?

Switches

Which device understands both MAC and IP addresses?

Routers

Which is faster, LAN or WAN

LAN, because its smaller

What is the standard wired LAN speed today?

1Gbps → 1,000Mbps

In a smaller network, why should you only have 1 router?

Routers connect networks and having more than one would lead to configuration problems

What 3 devices is a Wireless Router comprised of?

Router, Switch, and WAP

How is a WAP different from a Wireless Router

WAP doesn’t do router functions. It acts similarly to a switch or hub. A router reads and assigns IP addresses.

What command can be used to view your MAC and IP addresses?

ipconfig /all

What is the purpose of a modem

brings analog data (internet traffic) to your home (digital)

What does a repeater do?

receives a weakened signal, amplifies it, and retransmits it to extend the reach of a network

The standard wired setup is:
A) PC --> Router --> Switch --> Internet
B) PC --> Switch --> Router --> Internet
C) PC --> Internet --> Router --> Switch
D) Switch --> PC --> Router --> Internet

B) PC --> Switch --> Router --> Internet

Which device always "floods all the network ports" when it receives a data frame?
A) nic
B) hub
C) switch
D) router

B) hub

What is the standard wired LAN network speed today?
A) 100 Mbps
B) 600 Mbps
C) 1000 Mbps
D) 10 Gbps

C) 1000 Mbps

What is a typical average home WAN network speed today?
A) 1-50 Mbps
B) 50-100 Mbps
C) 150-350 Mbps
D) 500-1000 Mbps

B) 50-100 Mbps

Wireless routers are a combination of which devices?
A) hub, switch, router
B) repeater, wireless access point, switch
C) wireless access point, modem, router
D) wireless access point, switch, router

D) wireless access point, switch, router

What address is 48 bits in length and considered a permanent address?
A) ip address
B) logical address
C) physical address
D) broadcast address

C) physical address

Which of the following connects different networks together?
A) router
B) repeater
C) switch
D) modem

A) router

Which device is responsible for connecting all the end devices in a network?
A) bridge
B) switch
C) router
D) gateway

B) switch

In the classroom your laptop connects to which device first?
A) wireless router
B) modem
C) router
D) wireless access point

D) wireless access point

What 2 addresses does every device on the network have?
A) fast and slow
B) wired and wireless
C) mac and ip
D) green and red

C) mac and ip

Which device allows you to get Wifi signal to an area that has weak signaling?
A) repeater
B) gateway
C) hub
D) router

A) repeater

What device combines a network modem with a wireless router?
A) repeater
B) gateway
C) router
D) wireless bridge

B) gateway

Many simple home networks use which of the following:
A) gateways
B) switches
C) routers
D) firewalls

C) routers

Which of the following has the most ports?
A) hub
B) router
C) switch
D) modem

C) switch

What are the primary types of NICs today?
A) red and blue
B) n and ac
C) small and big
D) wired and wireless

D) wired and wireless