6.10.7 Internet Connectivity Practice Questions

Which of the following are features of Basic Rate ISDN (BRI)?

Two data Channels. One control channel. Dial-up connection. Explanation Basic Rate ISDN service is a dial-up service consisting of two 64 Kbps data (bearer) channels and a single control (delta) channel. the two data channels can be used independently of each other or bonded together to provide a total bandwidth of 128 Kbps. Primary Rate ISDN (PRI) shares many of the features of BRI, but includes up to 24 data channels.

Which of the following types of Internet connection services can allow you to be truly mobile while maintaining your Internet connection?

Cellular Explanation Cellular networking uses the cellular phone infrastructure for Internet access. The computing device, such as a notebook or table, must have a cellular antennae to connect directly to the cellular network. You can travel anywhere and stay connected to the network, as long as you are within the coverage are of the cellular service provider. You can also connect a computing device to a cellular network by tethering it to a smartphone or by using a smartphone as a Wi-Fi hot-spot. Mobile hot-spots are devices that can be used to connect to a cellular network. Wi-Fi is a technology that provides wireless access to a computer network but is limited to the range of the wireless access point. Satellite networking requires a satellite dish, which is not truly mobile. ISDN is a land line based technology.

Which type of network medium is used by an Integrated Services Digital Network (ISDN)?

Copper telephone wire. Explanation ISDN is a set of standard that allow digital data to be sent and received over copper wiring.

Which of the following network technologies is packaged as part of a BRI plan?

ISDN Explanation ISDN is a digital service operating over standard telephone company copper wiring offered in a variety of configurations. ISDN consists of multiple 64 Kbps channels. Basic Rate Interface (BRI) is a standard ISDN offering for household service.

Which actions allow you to access the Internet on your laptop via a cellular network?

Install a cellular USB adapter in an open port on the laptop. Explanation To access content on your computer (laptop): - Install a cellular adapter in a PCMCIA, ExpressCard, or USB slot. - Install and configure the software to use the card. An RJ-11 connection is typically for analogue phones, and is used for DSL, ISDN, and Dial-up Internet connections. Dial-up Internet connections use two ports on the modem: - The LINE port connects the modem to the wall jack. - The PHONE port connect the modem to the anlogue phone. You can't typically connect a USB device, such as a cellular adapter, to a wireless access point.

To access the Internet through the Publicly Switched Telephone Network (PSTN), what kind of connectivity device must you use?

Modem Explanation To establish a connection to Internet through the PSTN/POTS you must use a modem (modulator/demodulator) which converts digital PC data into analogue signals that can be transmitted through standard telephone lines. A CSU/DSU (Channel Service Unit/Data SErvice line. Data terminal equipment (DTE) is an end instrument that converts user information into signals for transmission or reconverts received signals into user information. Time-Division Multiplexing (TDM) is a type of digital or (rarely) analogue multiplexing in which two or more signals or bit streams are transferred apparently simultaneously as sub-channels in one communication channel, but physically are taking turns on the channel. A switch is a device for changing the course (or flow) of a circuit.

When configuring an ADSL installation, where should you install the DSL filters?

On connections leading to an analogue phone. Explanation For ADSL installations, place filters (splitters) on the line everywhere that an analogue phone is used. Do not install a filter on the line connected to the DSL router or DSL card. An F-type connector is used in cable Internet and TV connections.

Which of the following are used to connect a cable modem the Internet connection?

RG-6 coaxial cable. F-Type connectors Explanation Cable modems connect to the service provider using coaxial cable (RG-6) and an F-Type connector. DSL routers and dial-up modems use RJ-11 connectors. Ethernet uses Cat5 and Cat6 UTP cables and RJ-45 connectors.

You are configuring an ADSL connection. Which of the following will be part of the configuration?

RJ-11 connectors. Filters or splitters. Explanation To connect to the internet through a DSL connection: - Install an Internal DSL card in a single computer, or connect a DSL router to the phone line. - Use a phone cable with an RJ-11 connector to connect the DSL or router to the phone line. For ADSL, place filters (splitters) on the line everywhere that an analogue phone is used. - Do not install a filter on the line connected to the DSL router. Analogue modems are used for dial-up Internet access. F-type connectors and RG-6 cables are used for cable Internet access.

A healthcare organization provides mobile clinics throughout the world and needs to transfer patient statistical data to a central database via the Internet. Which network technology should you select to ensure network connectivity for any clinic located anywhere in the world, even remote areas?

Satellite Explanation Satellite capability is available even in areas that do not have a local network infrastructure. Satellite requires a local portable transmitter with an antenna directed skywards to a satellite. Satellite service providers offer nearly 100% global network coverage by maintaining a series of satellites circling the earth in geosynchronous orbit. Dial-up, ISDN and cable modem, require a local network infrastructure provided by either the telephone company or cable television company.

You are installing a satellite connection so your home office can connect to the Internet. Which of the following statements is true?

The satellite disk must be pointed in the correct direction for communicating with the satellite. Explanation During the installation, the satellite dish must be pointed in the correct direction for communicating with the satellite. With a single line satellite installation, the satellite connection is used for downloads and a phone line with a modem is used for uploads. Connect a satellite modem/router to the satellite disk using coaxial cable (RG-6) and a F-type connector. Connect the modem/router to your computer using a USB or Ethernet connection.

Which of the following are options for connecting a computing device, such as a notebook computer or a tablet, to a cellular network?

Use a USB cable to connect the device to the network through a smartphone. Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot. Use an integrated cellular antennae to connect the device directly to the cellular network. Use a USB cellular antennae to connect the device directly to the cellular network. Explanation You can connect a computing device, such as notebook computer or a tablet, to a cellular network by using any of these four options: - Use a USB cable to connect the device to the network through the smartphone. - Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot. - Use a USB cellular antennae to connect the device directly to the cellular network. - Use an integrated cellular antennae to connect the device directly to the cellular network. A transmitter antennae, or a dish, to communicate with a satellite will connect you to a satellite network, not a cellular network. Connecting to the cable service will also not connect you to a cellular network. Cable is a separate type of networking service.

You are talking with a customer support technician on the telephone. The technician recommends downloading a particular driver from Internet. When you try to connect to the Internet using your modem, you can't. What is the problem?

You need to hang up. Explanation You cannot talk on the telephone over the same line that the modem needs to use. When you try to connect with the modem, the line will be in use and the connection will fail because the modem can't dial the destination device. When troubleshooting a modem connection: Verify that the modem gets a dial tone. Verify that the modem dials the correct number. Verify that the receiving device answers the call. Verify network connection parameters (such as TCP/IP settings or connection settings). Verify any authentication or logon parameters.