The more accurate name for a cable modem is a ______.
answer
A CMTS is the proper name for a cable modem.
question
A section of the radio spectrum that's been agreed upon to be used for certain communications is known as a _______.
answer
Frequency Band
Different locales might have different frequency bands defined.
question
A traditional wireless network involving access points that all have wired connections is known as a(n) _______.
answer
A WLAN is the term for a traditional wireless network.
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WPA stands for _______.
answer
WPA is an update to WEP that's much more secure.
question
A point-to-point virtual private network (VPN) utilizes this type of device at each point.
answer
Firewalls are devices that can act as a VPN endpoint.
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A wireless network does not benefit like a wired network does, when it comes to collision reduction. Which device reduces collisions on a wired network?
answer
Switches remember which computers are on which physical interfaces, so traffic is only sent to the intended node.
question
Which technology is NOT a form of broadband?
answer
ISDN is an older analog dial-up method that is faster than traditional dial-up.
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Which connection technology uses what is known as a CMTS?
answer
The Cable Modem Termination System (CMTS) connects lots of different cable connections to an ISPs core network.
question
An IT suspects that an unauthorized device is connected to a wireless network. This is a result of passkey sharing on a device brought from home. What is put in place to stop such activity?
answer
MAC filtering allows or disallows a device to connect to a network, based on a hardware address.
question
Cat5 and Cat6 cabling refer to which reference model layer?
answer
Physical media, like cables, provide connectivity and are associated with the physical layer.
question
What two benefits are a result of configuring a wireless mesh network?
answer
Range increases when access points are configured in a mesh where all points are connected to each other.
Performance increases when access points are configured in a mesh where all points are connected to each other.
question
A modulator/demodulator is better known as a _____
answer
Modem stands for modulator/demodulator.
question
FTTP stands for _______
answer
Fiber To The Premises
FTTP is a technology that uses fiber to bring an internet connection to a building or home.
question
The original and flawed wireless security protocol is known as _____
answer
WEP is not very secure and has been mostly phased out.
question
WPA stands for _______
answer
WPA is an update to WEP that's much more secure.
question
Devices that connect to the Internet are often categorized into silos. Which silo controls network traffic?
answer
Switches and routers are two of many devices that control network connectivity and traffic.
question
Cable Internet access can be described with which feature?
answer
Shared bandwidth means multiple users use the same connection. With cable Internet, many users (like in a city block) use the same line back to the ISP.
question
An 802.11 frame contains a number of fields. Which field describes the version of 802.11 that is being used?
answer
The frame control field contains a number of subfields to describe the frame and processing. This includes the version of 802.11 being used.
question
Which form of Digital Subscriber Line (DSL) features differing upload and download speeds?
answer
Asymmetric Digital Subscriber Line (ADSL) connections feature different speeds for outbound and incoming data.
question
Which Fiber implementation is often referred to as Fiber To The Premises (FTTP)?
answer
Fiber To The Home (FTTH)
With FTTH, fiber is actually run to each individual residence in a neighborhood.
Fiber to the Building (FTTB)
FTTB is a setup where fiber technologies are used for data delivery to an individual building.
question
Cellular network towers are configured in such a way so that they avoid what type of problem?
answer
Cell towers are similar to wireless access points. Configuration of a tower includes avoiding overlap issues.
question
Cat5 and Cat6 cabling refer to which reference model layer?
answer
Physical media, like cables, provide connectivity and are associated with the physical layer.
question
The rate at which a dial-up connection can send data across a telephone wire is known as a _____ rate.
answer
baud
A baud rate is equivalent to bits per second.
question
ONT stands for ______
answer
Optical Network Terminator
question
WPA2 uses a key that's ____ bits long.
answer
256-bit keys are pretty difficult to break.
question
What connection type is known as "always on"?
answer
Broadband is known as an "always on" technology. This is because a connection does not have to first be initiated.
question
Similar to Wireless networks, cellular networks use band configuration to avoid what problem?
answer
Overlap
Cell towers are configured to use bands that don't overlap, just like WiFi uses different channels.
question
Which solution eliminates the need for dedicated high-speed WAN connections between sites?
answer
A point-to-point VPN utilizes the Internet to create a more private high-speed link without the need for dedicated WAN technology.
question
Which technology is used as a demarcation point for fiber optics?
answer
An optical network terminator is similar to a modem and acts as a demarc for a fiber optic line.
question
Which value once represented a very popular modem baud rate that was used with dial-up connections?
answer
14400
While not commonly used today, dial-up still exists. 14400 (14.4k) baud was a popular baud (speed) rate.
question
The more accurate name for a modem used for a DSL connection is a ______
answer
A DSLAM is the proper name for a DSL modem.
question
Digital Subscriber Line (DSL) is the only Internet connection option available for a small office in the middle of nowhere. Which type will provide speeds above 1.544 megabits per second?
answer
High Bit-rate Digital Subscriber Line (HDSL)
While not commonly used today, dial-up still exists. 14400 (14.4k) baud was a popular baud (speed) rate.
question
In which wireless configuration type do nodes communicate directly with each other, rather than with an access point?
answer
Ad-hoc
In an ad-hoc network, all nodes communicate and transmit directly to each other.
question
What are two characteristics of a 5Ghz band wireless network?
answer
Short range
Fast speeds
A wireless network that operates with a 5Ghz frequency has a much shorter range than that of a 2.4Ghz network.
question
Television broadcasts were originally delivered by using which technology?
answer
Wireless
question
The more accurate name for a modem used for a DSL connection is a ______.
answer
A DSLAM is the proper name for a DSL modem.
question
An Internet connection problem for customers is found to be outside a carrier's regional office. As a result, which area needs troubleshooting?
answer
A local loop is the portion of a network between a customer's demarcation point and the carrier or ISP facility.
question
Which configuration is considered to be a common way to increase security in a wireless network?
answer
MAC filtering only allows certain devices to connect to a network.
question
Another name for cellular networking is ______ networking.
answer
Mobile
Depending on where you're from, one term or the other may be more common.
question
Modems communicate data by using which method?
answer
Audible wavelengths
Phone lines were developed to transmit sound. Modems transfer data through audible wavelengths.
question
When it comes to wireless channels, which channels never overlap?
answer
1
11
Some channels are close together and may cause an overlap. Channels 1, 6, and 11 are far enough apart to never overlap.
question
A T3 consists of _____ T1 lines.
answer
24
question
The first field in an 802.11 header is known as a ________.
answer
The Frame Control Field specifies things like what version of 802.11 is in use.
question
Which wireless security standards uses a 128-bit key?
answer
WiFi Protected Access (WPA)
WPA replaced WEP. It uses a 128-bit key making it harder to crack.
question
Which of the following is NOT a Wide Area Network (WAN) connection type?
answer
Digital Subscriber Line (DSL)
question
Fiber optic cable from a service provider can be delivered directly to the end user. Which implementation delivers data to a cabinet for distribution?
answer
FTTN
Fiber To The Neighborhood (FTTN) defines fiber technology used to deliver data to a single physical cabinet that serves a population.
question
How many simultaneous phone conversations can a T1 line carry?
answer
24
A T1 is a dedicated communication line that can carry both data and voice.
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