Network+ Days 1 - 10

What is a place where different internet networks meet and exchange traffic?

• Datacenter

• Demarcation Point

• IXP

• ISP

This OSI Layer translates different character encoding systems and converts data into a format that the Application Layer can understand.

• Transport Layer

• Session Layer

• Application Layer

• Presentation Layer

(Blank) is a network protocol that lets devices listen before transmitting and pause or retry if a collision is detected, commonly used in older Ethernet networks.

• QoS

• BGP

• CSMA/CD

• LDAP

This type of cable is typically installed in the void above a drop ceiling and is made of PVC.

• UTP

• Plenum

• STP

• Riser

This type of structured cabling connects different telecom rooms and equipment rooms within the building, ensuring robust connectivity.

• Trunk Cabling

• Backbone Cabling

• Horizontal Cabling

• Riser Cabling

Answer explanation

Backbone cabling connects major parts of a network via long-distance high capacity links.
Trunk cabling bundles multiple network connections into one cable, usually between switches in a rack.

I want to transmit multiple data streams simultaneously on a single fiber optic cable... what technology will allow me to do that? Choose the BEST answer.

• Wavelength Division Multiplexing

• Multi-Mode Fiber

• CSMA/CD

• Carrier Pigeon

This type of fiber optic connector is commonly used in high-vibration environments because it has a screw-on mechanism to provide a firm, threaded connection (Hint: not the twist-lock design like another option below)

• FC

• LC

• SC

• ST

A value added to a data frame that allows the receiving device to detect errors by comparing it to a recalculated checksum.

• ECC

• Parity Bits

• FCS

• Wire Shark

Answer explanation

FCS: Frame Check Sequence
It uses Cyclic Redundancy Check math to generate a value based on that frame's contents. The receiver then recalculates that CRC and compares it to the FCS. If they don't match, the frame is discarded... but not corrected.

ff:ff:ff:ff:ff:ff is the:

• DHCP Broadcast Message

• MAC Broadcast Message

• IPv6 Broadcast Message

• A bunch of f's for funsies

Answer explanation

IPv6 eliminated the broadcast message, and instead uses Multicast and Anycast.

This device operates at Layer 2 and filters traffic between two or more network segments, creating a single network.

• Bridge

• Switch

• Router

• NGFW