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A+ Key Topic > 2.2 Compare and contrast common networking hardware devices. > Flashcards

2.2 Compare and contrast common networking hardware devices. Flashcards

1
Q

A router connects:

A

one network to another

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2
Q

Most routers sold for SOHO configurations are:

A

WiFi (802.11 family) wireless routers with integrated Fast Ethernet or Gigabit Ethernet switches

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3
Q

The switches built into routers are:

A

stackable

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4
Q

If a router needs more ports, you can add a:

A

switch

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5
Q

Routers are:

A

specialized computing devices that are controlled by firmware

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6
Q

When you log into a router to view or change its configuration:

A

the options available are limited by the router’s firmware

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7
Q

A switch provides:

A

connectivity to devices in a local network

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8
Q

Each port on a switch works:

A

independently, allowing more than one concurrent session

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9
Q

A switch makes:

A

a direct connection between the sending and receiving devices by identifying the Media Access Control (MAC) address of each device

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10
Q

In today’s networks, switches are very common in:

A

100Mbps, 1000Mbps, and 10Gbps networks

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11
Q

Switches can be stacked to:

A

connection ports in a network

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12
Q

Stacked switches are:

A

daisy-chained together, and in theory there is no limit to the number of switches possible in a network

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13
Q

A switch resembles a hub but:

A

creates a dedicated full-speed connection between the two computers that are communicating with each other

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14
Q

Low-cost switches used in SOHO networks cannot be:

A

configured to perform complex switching functions and are considered unmanaged

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15
Q

Managed switches are common in:

A

corporate and enterprise networks

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16
Q

Managed switches support:

A

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

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17
Q

Wireless access point (WAP) extends:

A

a wired network to wireless connections

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18
Q

Wireless access point (WAP) is based on:

A

Ethernet, but involves the IEEE 802.11 group of standards, which define wireless LANs (WLANs)

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19
Q

A Wireless access point (WAP) acts as a:

A

central connecting point for computers equipped with wireless network adapters, like a switch

20
Q

A Wireless access point (WAP) identifies each computer by

A

its MAC address

21
Q

Using a cloud-based controller, administrators can:

A

manage wireless LANs and branch offices that are located anywhere on the Internet from a central location

22
Q

A firewall is a:

A

hardware appliance or software application that protects a computer from unwanted intrusion

23
Q

In SOHO, firewall functionality is usually built into:

A

the router

24
Q

In larger organizations, firewall functionality is usually built into:

A

a device separate from the router

25
Q

A firewall stops:

A

unwanted connections from the outside and can block basic network attacks

26
Q

A network interface card (NIC) is:

A

the interface on a computer (or other device) that connects to the LAN

27
Q

The network interface card (NIC) is designed to:

A

take communication off the physical cable (or wireless signal from the air) and present it to the computer for processing

28
Q

A network interface card (NIC) connects to:

A

a cable with an RJ-45 connecter

29
Q

A network interface card (NIC) has a:

A

unique physical address, known as a MAC address, that identifies the device to other hosts on the network

30
Q

Wireless network signals can be blocked by:

A

masonry

steel

concrete walls

31
Q

A signal repeater or extender can:

A

enable areas of weak or no signals to take advantage of a wireless network

32
Q

A wireless repeater resembles:

A

a wireless router and might include a switch, but instead of connecting a cable or DSL modem, it connects wirelessly to a wireless router

33
Q

A hub is the simplest device used on:

A

an Ethernet network for connecting devices to each other

34
Q

Hubs were used to:

A

connect computers together and to boost the communication signal between computers

35
Q

Hubs have been almost completely replaced by switches because:

A

a hub splits the bandwidth of a connection among all the computers connected to it

36
Q

A modem connects:

A

a LAN to an Internet service provider (ISP)

37
Q

A dial-up modem is:

A

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

38
Q

Dial-up modems are:

A

slow devices and are usually used today only if no other Internet option is available

39
Q

The devices most commonly used to connect small networks to the Internet are:

A

Cable modems

DSL modems

40
Q

A wireless bridge is:

A

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

41
Q

A patch panel is a:

A

box designed as a junction point for twisted pair (TP) cable and fiber cable used in networks

42
Q

A Power over Ethernet (PoE) switch is a:

A

switch with added capability (a built-in endspan) to send power out a port using CAT5 or better grades of twisted pair cable

43
Q

A Power over Ethernet (PoE) enables:

A

wireless access points, IP security cameras, VoIP phones, routers, and other Ethernet devices to be installed in areas away from traditional power sources

44
Q

A power over Ethernet injector installed:

A

between a standard Ethernet switch and a PoE device to provide power only

45
Q

Wireless Ethernet is also known as:

A

IEEE 802.11

WiFi

46
Q

Wireless Ethernet is:

A

the collective name for a group of wireless technologies compatible with wired Ethernet

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