2.2 - Network Devices Flashcards

1
Q

What type of device is a router?

A

A router is a device that forwards traffic between different IP subnets, operating at layer 3 of the OSI model.

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2
Q

What functionality do SOHO routers typically combine?

A

SOHO routers combine the functions of switches, routers, and wireless access points into one device.

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3
Q

How does a switch forward traffic?

A

A switch forwards traffic based on the destination MAC address inside of the packet.

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4
Q

What is the purpose of an Application Specific Integrated Circuit (ASIC) in a switch?

A

ASICs allow switches to achieve very fast throughput by handling forwarding decisions in hardware.

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5
Q

What is the difference between an unmanaged switch and a managed switch?

A

An unmanaged switch has few configuration options and no SNMP capabilities, whereas a managed switch provides additional capabilities such as VLAN configuration, traffic prioritization, and SNMP support.

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6
Q

What is Spanning Tree Protocol (STP) used for?

A

STP is used to prevent loops between multiple switches in a network.

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7
Q

What is an access point used for?

A

An access point provides wireless connectivity by bridging the wireless network to the wired network.

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8
Q

How does an access point make forwarding decisions?

A

An access point makes forwarding decisions based on the destination MAC address, similar to a switch.

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9
Q

What is a patch panel used for in a network?

A

A patch panel is used to manage and connect cables from workstations to switches, allowing for easier changes and organization.

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10
Q

What does Power Over Ethernet (POE) allow for?

A

POE allows a single Ethernet cable to provide both data transfer and power to a device.

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11
Q

What is the difference between endspan and midspan POE?

A

Endspan POE comes from a switch that supports POE, while midspan POE uses an injector to add power to the Ethernet cable.

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12
Q

What are the different POE standards and their power specifications?

A

IEEE 802.3af provides 15.4 watts, IEEE 802.3at provides 25.5 watts, IEEE 802.3bt Type 3 provides 51 watts, and IEEE 802.3bt Type 4 provides 71.3 watts.

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13
Q

What is the role of a hub in a network?

A

A hub is a simple device that retransmits incoming data to all its ports, operating at half duplex and not efficiently managing traffic.

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14
Q

What is DOCSIS used for?

A

DOCSIS (Data Over Cable Service Interface Specification) is a standard for sending data over cable networks, including internet, television, and phone services.

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15
Q

What is the difference between DSL and ADSL?

A

DSL (Digital Subscriber Line) is a broadband technology that uses telephone lines. ADSL (Asymmetric DSL) has faster download speeds compared to upload speeds.

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16
Q

What is an Optical Network Terminal (ONT) used for?

A

An ONT connects to a fiber network and converts the signal to a format usable inside the home, such as Ethernet.

17
Q

What is a Network Interface Card (NIC)?

A

A NIC is a hardware component that allows a device to connect to a network, whether it is copper Ethernet, fiber, or other types of network interfaces.