2.2 Compare and contrast common networking hardware devices. Flashcards
A router connects:
one network to another
Most routers sold for SOHO configurations are:
WiFi (802.11 family) wireless routers with integrated Fast Ethernet or Gigabit Ethernet switches
The switches built into routers are:
stackable
If a router needs more ports, you can add a:
switch
Routers are:
specialized computing devices that are controlled by firmware
When you log into a router to view or change its configuration:
the options available are limited by the router’s firmware
A switch provides:
connectivity to devices in a local network
Each port on a switch works:
independently, allowing more than one concurrent session
A switch makes:
a direct connection between the sending and receiving devices by identifying the Media Access Control (MAC) address of each device
In today’s networks, switches are very common in:
100Mbps, 1000Mbps, and 10Gbps networks
Switches can be stacked to:
connection ports in a network
Stacked switches are:
daisy-chained together, and in theory there is no limit to the number of switches possible in a network
A switch resembles a hub but:
creates a dedicated full-speed connection between the two computers that are communicating with each other
Low-cost switches used in SOHO networks cannot be:
configured to perform complex switching functions and are considered unmanaged
Managed switches are common in:
corporate and enterprise networks
Managed switches support:
Simple Network Mail Protocol (SNMP) for diagnostics and performance measurement,
virtual LANs (VLANs) to enable multiple workgroups to use the same physical switch but keep their traffic separate, and redundancy
Wireless access point (WAP) extends:
a wired network to wireless connections
Wireless access point (WAP) is based on:
Ethernet, but involves the IEEE 802.11 group of standards, which define wireless LANs (WLANs)
A Wireless access point (WAP) acts as a:
central connecting point for computers equipped with wireless network adapters, like a switch
A Wireless access point (WAP) identifies each computer by
its MAC address
Using a cloud-based controller, administrators can:
manage wireless LANs and branch offices that are located anywhere on the Internet from a central location
A firewall is a:
hardware appliance or software application that protects a computer from unwanted intrusion
In SOHO, firewall functionality is usually built into:
the router
In larger organizations, firewall functionality is usually built into:
a device separate from the router
A firewall stops:
unwanted connections from the outside and can block basic network attacks
A network interface card (NIC) is:
the interface on a computer (or other device) that connects to the LAN
The network interface card (NIC) is designed to:
take communication off the physical cable (or wireless signal from the air) and present it to the computer for processing
A network interface card (NIC) connects to:
a cable with an RJ-45 connecter
A network interface card (NIC) has a:
unique physical address, known as a MAC address, that identifies the device to other hosts on the network
Wireless network signals can be blocked by:
masonry
steel
concrete walls
A signal repeater or extender can:
enable areas of weak or no signals to take advantage of a wireless network
A wireless repeater resembles:
a wireless router and might include a switch, but instead of connecting a cable or DSL modem, it connects wirelessly to a wireless router
A hub is the simplest device used on:
an Ethernet network for connecting devices to each other
Hubs were used to:
connect computers together and to boost the communication signal between computers
Hubs have been almost completely replaced by switches because:
a hub splits the bandwidth of a connection among all the computers connected to it
A modem connects:
a LAN to an Internet service provider (ISP)
A dial-up modem is:
a device that allows a computer access to the Internet by changing the digital signals of the computer to analog signals used by a typical land-based phone line
Dial-up modems are:
slow devices and are usually used today only if no other Internet option is available
The devices most commonly used to connect small networks to the Internet are:
Cable modems
DSL modems
A wireless bridge is:
a device (or a setting on many access points) that is used to connect two wireless LANs together in order to expand a wireless network or to connect wireless clients to an Ethernet network
A patch panel is a:
box designed as a junction point for twisted pair (TP) cable and fiber cable used in networks
A Power over Ethernet (PoE) switch is a:
switch with added capability (a built-in endspan) to send power out a port using CAT5 or better grades of twisted pair cable
A Power over Ethernet (PoE) enables:
wireless access points, IP security cameras, VoIP phones, routers, and other Ethernet devices to be installed in areas away from traditional power sources
A power over Ethernet injector installed:
between a standard Ethernet switch and a PoE device to provide power only
Wireless Ethernet is also known as:
IEEE 802.11
WiFi
Wireless Ethernet is:
the collective name for a group of wireless technologies compatible with wired Ethernet
