Google IT Support Professional:The Bits and Bytes of Computer Networking (Week 5) Connecting to the Internet.

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★Connecting to the Internet★

Q1.A T1 consists of _____ telephone channels.

1. 1
2. 24
3. 28
4. 100

A T1 uses 24 telephone channels to send data.

Q2.The more accurate name for a modem used for a DSL connection is a ______.

1. POTS
2. DSLAM
3. CMTS
4. ONT

A DSLAM is the proper name for a DSL modem.

Q3.FTTP stands for _______.

1. Fiber to the Premises
2. Fiber to the People
3. Fiber Telephone Total Package
4. File Transfer Telephone Protocol

FTTP is a technology that uses fiber to bring an internet connection to a building or home.

Q4.The first field in an 802.11 header is known as a ________.

1. Duration Field
2. Sequence Control Field
3. Frame Control Field
4. Preamble

The Frame Control Field specifies things like what version of 802.11 is in use.

Q5.WPA stands for _______.

1. WiFi Protected Access
2. Wireless Protection Augmentation
3. WiFi Proxy Access
4. Wired Protected Access

WPA is an update to WEP that's much more secure.

Q6.Modems communicate data by using which method?

1. Audible wavelengths
2. Radio frequency
3. Light pulses
4. Electric charges

Phone lines were developed to transmit sound. Modems transfer data through audible wavelengths.

Q7.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?

1. Digital Subscriber Line Access Multiplexer (DSLAM)
2. High Bit-rate Digital Subscriber Line (HDSL)
3. Symmetric Digital Subscriber Line (SDSL)
4. Asymmetric Digital Subscriber Line (ADSL)

Q8.A point-to-point virtual private network (VPN) utilizes this type of device at each point.

1. Modem
2. PPPoE
3. Multiplexer
4. Firewall

Firewalls are devices that can act as a VPN endpoint.

Q9.In which wireless configuration type do nodes communicate directly with each other, rather than with an access point?

1. Ad-hoc
2. Mesh network
3. 2.4Ghz
4. 802.11b

Q10.Similar to Wireless networks, cellular networks use band configuration to avoid what problem?

1. Distance
2. Security
3. Speed
4. Overlap

Cell towers are configured to use bands that don't overlap, just like WiFi uses different channels.

Q11.Which form of Digital Subscriber Line (DSL) features differing upload and download speeds?

1. HDSL
2. SDSL
3. DSLAM
4. ADSL

Asymmetric Digital Subscriber Line (ADSL) connections feature different speeds for outbound and incoming data.

Q12.Which connection technology uses what is known as a CMTS?

1. Fiber optic
2. Dial-up
3. Cable Internet
4. Digital Subscriber Line

The Cable Modem Termination System (CMTS) connects lots of different cable connections to an ISPs core network.

Q13.Which solution eliminates the need for dedicated high-speed WAN connections between sites?

1. T-carrier technology
2. Asynchronous Transfer Mode (ATM)
3. Point-to-point VPN
4. Cable broadband

Q14.Cellular network towers are configured in such a way so that they avoid what type of problem?

1. Distance
2. Speed
3. Overlap
4. Signal strength

Cell towers are similar to wireless access points. Configuration of a tower includes avoiding overlap issues.

Q15.Television broadcasts were originally delivered by using which technology?

1. Ethernet
2. Wireless
3. Broadband
4. Coaxial cable

Q16.What two benefits are a result of configuring a wireless mesh network? Check all that apply.

1. Ad-hoc configuration
2. Performance
3. Range
4. WiFi protected setup

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