Shared Flashcard Set

Details

2.8
Network Devices
17
Computer Science
Post-Graduate
01/13/2017

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Cards

Term
Which networking device modulates and demodulates digital data to an analog signal that can be sent over a telephone line?
Definition
A modem
Term
What is the purpose of an access point?
Definition
To extend the physical range of a wireless local area network (WLAN) and facilitate communications with wireless devices
Term
Which networking device is hardware-based rather than software-based and only forwards packets to the destination port based on media access control (MAC) addresses?
Definition
A switch
Term
What does a Power over Ethernet (PoE) injector allow you to do?
Definition
Enable a PoE-compliant device to connect to a non-PoE switch
Term
What is the basic purpose of a repeater in a network?
Definition
To regenerate a signal to improve its strength over transmission distances
Term
What type of device commonly uses Power over Ethernet (PoE) provided by a switch?
Definition
A Voice over IP (VoIP) phone
Term
What technology is used to transfer both electrical power and data to remote devices over twisted-pair cable in an Ethernet network?
Definition
Power over Ethernet (PoE)
Term
What standard does Power over Ethernet (PoE) use?
Definition
IEEE 802.3af
Term
How many watts does PoE provide and what does it require?
Definition
15.4 watts and it requires CAT-5 or higher copper cable
Term
How many watts does the PoE+ provide?
Definition
25.5 watts
Term
What is the benefit of implementing a firewall in a network?
Definition
To protect the network from unauthorized data by blocking unsolicited traffic
Term
What doe antivirus software do?
Definition
Scans files on devices connected to the network and quarantines anything that looks suspicious
Term
What is the purpose of a networking hub?
Definition
To connect the nodes in a physical star topology network into a logical bus toplogy
Term
What have hubs been largely replaced with?
Definition
Switches
Term
What are patch cables?
Definition
Cords that are used to make network connections to a rack in a wiring closet
Term
What is a bridge?
Definition
A networking device that is software-based and makes decisions about whether to forward a packet based on whether the destination is part of the same LAN or another LAN?
Term
What is a hub?
Definition
A networking device that sends data to all devices connected to it and lacks the intelligence to determine the best path for data packet
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