Intro to Networking (Module 1)

Question 1

Networks are comprised of: (Choose all that apply)

A. End devices
B. Infrastructure devices
C. Cablesand media
D. Protocols
E. Applications

Answer 1

A, B, C, D (End devices, Infrastructure devices, cables and media, protocols)

Explanation: Every item on the list is part of what makes up a network. Applications are what run on networks.

Question 2

Which of the following are not considered client or end devices? (Choose two)

A. Laptop
B. Tablet
C. Access Point
D. IP Phone
E. Hub
F. Printer

Answer 2

C, E (Access Point, Hub)

Explanation: Access Points and Hubs are infrastructure devices that connect end devices.

Question 3

What is required for traffic from the LAN to get to a remote LAN or the Internet?

Answer 3

The local LAN needs a gateway router in order to leave the local LAN and reach other LANs.

Explanation: Routers are the gateways/doorways between different LAN networks

Question 4

Identify the following logical network icons:

A. switch, router, access point
B. wireless router, router, switch
C. access point, router, switch
D. access point, switch, router

Answer 4

B. (Access Point, router, switch))

Explanation: There are many logical network icons used today, probably too many to memorize them all. The three icons depicted in this question are the most commonly used and should be committed to memory.

Question 5

What is the key difference between a switch and a hub?

Answer 5

Hubs forward all packets out all ports. Switches forward intelligently by learning mac addresses and recording them in a table.

Explanation: Hubs are an older LAN technology that has been replaced with layer 2 switches because a switch is much more efficient in forwarding frames and provides more security.

Question 6

What are the two general categories of media?

Answer 6

The two general categories are wired and wireless media.

Explanation: Bits either go through a cable (copper or fiber optic) or they get transmitted through the radio waves

Question 7

\_\_\_\_\_\_\_\_ connect different networks together and use network addressing such as IP addresses to forward traffic between networks.
A. LAN
B. Switches
C. Routers
D. WAN

Answer 7

C. (Routers)

Explanation: The two clues in this question are first that the device connects different networks (we know that routers are the ones that connect different networks) and second that it uses IP addressing for forward traffic (routers are layer 3 devices that forward traffic based on the layer 3 IP address).