TestOut Network Pro 3.1.5

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Which network component connects a device with the transmission media and allows it to send and receive messages?

Network interface card

Network Interface card The network interface card (NIC) allows a device to send and receive messages over the transmission media.

What device sends signals from a computer onto a network?


Transceiver A transceiver (short for transmitter/receiver) sends signals to and receives signals from the network. It translates the parallel data stream of the computer to the serial data stream of the network and vice versa. Most transceivers are now built into network interface cards (NICs).

Which of the following statements accurately describes how a modem works? (Select two)

It modulates digital data from the PC into analog data and transmits it on a telephone network. It demodulates analog data from a telephone network into digital PC data. Modem is shorthand for modulator/demodulator. Its job is to convert (or modulate) digital data from a PC into analog telephone signals and transmit them through a telephone network.

You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports.

Which device should you use?

Media converter

Media converter Use a media converter to convert from one media type to another media type within the same architecture. Use a bridge to connect two devices that use different network architectures, for example to connect a wired network to wireless clients. A hub or a repeater connect devices using the same media type.

At which OSI model layer does a media converter operate?

Layer 1 A media converter operates at the OSI model layer 1 (Physical layer). The media converter translates frames into bits and transmits them on the transmission medium. At layer 2, the MAC address is added to make the data into a frame. At layer 3, the IP address is added to the packet. A media converter does not alter or use the MAC address or the IP address.

What type of module might a switch use to allow it to modify the media type supported by a switch port? (Select two)


SFP GBIC Older network adapters used an external transceiver that matched the media type. While nearly all current network adapters come with a built-in transceiver type, new devices, such as switches and routers, use transceiver modules that allow you to modify the media type of a port by changing the transceiver. Transceiver modules include the following: GBIC (gigabit interface converter) is a larger-sized transceiver that fits in a port slot and is used for Gigabit media including copper and fiber optic. SFP (small form-factor pluggable) is similar to a GBIC but with a smaller size. An SFP is sometimes called a mini-GBIC XFP transceiver is similar in size to an SFP but is used for 10 Gigabit networking.

Which of the following is a valid MAC address?


C0-34-FF-15-01-8E A MAC or hardware address is a unique identifier hard coded on every network adapter card. A valid MAC address has a total of 12 hexadecimal numbers. Hexadecimal numbers contain the numbers 0 to 9 and letters A to F. Valid values in a MAC address range anywhere from 00 to FF. Note that one of the answers would be valid MAC address except it uses a G value, which is beyond the range of a hexadecimal number.

Which of the following is a valid MAC address?


AB.07.CF.62.16.BD MAC addresses are comprised of 12 hexadecimal digits (ranging from 0-9 and A-F). They are typically represented as a three sets of four hexadecimal digits or six sets of two hexadecimal digits separated with periods. Regardless of the grouping and separator values, look for 12 hex digits for a valid MAC address.

Which of the following is true about the MAC address? (Select two)

It is typically represented by octets of decimal numbers between 0-255

It is typically represented by hexadecimal numbers.

It is a 64-bit address

It is a 48-bit address

It is a 32-bit address

It is typically represented by hexadecimal numbers. It is a 48-bit address The MAC address identifies the physical address of the network adapter. The MAC address is a 12-digit (48-bit) hexadecimal number (each number ranges from 0-9 or A-F). The address is often written as 00-B0-D0-06-BC-AC OR 00B0.D006.BCAC, although dashes, periods, and colons can be used to divide the MAC address parts. An IPv4 address is 32-bits and uses octets of decimal numbers between 0-255. An IPv6 address is a 64-bit address that uses 32 hexadecimal numbers.

A host wants to send a message to another host with the IP address IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?


ARP Hosts use the Address Resolution Protocol (ARP) to discover the hardware address of a host.

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