2.2 - Network Devices Flashcards
What type of device is a router?
A router is a device that forwards traffic between different IP subnets, operating at layer 3 of the OSI model.
What functionality do SOHO routers typically combine?
SOHO routers combine the functions of switches, routers, and wireless access points into one device.
How does a switch forward traffic?
A switch forwards traffic based on the destination MAC address inside of the packet.
What is the purpose of an Application Specific Integrated Circuit (ASIC) in a switch?
ASICs allow switches to achieve very fast throughput by handling forwarding decisions in hardware.
What is the difference between an unmanaged switch and a managed switch?
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.
What is Spanning Tree Protocol (STP) used for?
STP is used to prevent loops between multiple switches in a network.
What is an access point used for?
An access point provides wireless connectivity by bridging the wireless network to the wired network.
How does an access point make forwarding decisions?
An access point makes forwarding decisions based on the destination MAC address, similar to a switch.
What is a patch panel used for in a network?
A patch panel is used to manage and connect cables from workstations to switches, allowing for easier changes and organization.
What does Power Over Ethernet (POE) allow for?
POE allows a single Ethernet cable to provide both data transfer and power to a device.
What is the difference between endspan and midspan POE?
Endspan POE comes from a switch that supports POE, while midspan POE uses an injector to add power to the Ethernet cable.
What are the different POE standards and their power specifications?
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.
What is the role of a hub in a network?
A hub is a simple device that retransmits incoming data to all its ports, operating at half duplex and not efficiently managing traffic.
What is DOCSIS used for?
DOCSIS (Data Over Cable Service Interface Specification) is a standard for sending data over cable networks, including internet, television, and phone services.
What is the difference between DSL and ADSL?
DSL (Digital Subscriber Line) is a broadband technology that uses telephone lines. ADSL (Asymmetric DSL) has faster download speeds compared to upload speeds.
