6.2.6 Practice Questions Network Hardware – Flashcards

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Switch Explanation A physical star topology uses a switch or a hub. Routers are used to connect multiple subnets together. A repeater regenerates a network signal so that it can be transmitted for longer distances.
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What device is used to create a physical star topology? A. Router B. Bridge C. Repeater D. Switch
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Network interface card Explanation The network interface card (NIC) allows a device to send and receive messages over the transmission media.
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Which network component connects a device to the transmission media and allows it to send and receive messages? A. Bridge B. Protocol C. Network interface card D. Switch
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It demodulates analogue data from a telephone network into digital PC data. It modulates digital data from the PC into analogue data and transmit it on a telephone. Explanation Modem is shorthand for modulator/ demodulator, Its job is to convert (or modulate) digital data from a PC into analogue telephone signals and transmit them through a telephone network. It also receives analogue data from the telephone network and converts (or demodulates) it into digital PC data.
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Which of the following statements accurately describes how a modem works? A. It demodulates analogue data from a telephone network into digital PC data. B. It modulates digital data from the PC into analogue data and transmit it on a telephone. C. It modulates digital data from a telephone network D. It demodulates analog data from a telephone network using digital signals E. It communicates over a telephone network using
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C0-34-FF-15-01-BE Explantion 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 the letters A to F. Valid values in a MAC address range anywhere from 00 to FF. Note that one of the answers would be a valid MAC address except it uses a G value, which is beyond the range of a hexadecimal number.
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Which of the following is a valid MAC address?
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ARP Explanation Hosts use the Address Resolution Protocol (ARP) to discover the hardware address of a host.
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A host wants to send a message to another host with the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address? A. BOOTP B. ARP C. DNS D. DHCP
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Switch Explanation A switch offers guaranteed bandwidth to each port; unlike a hub which shares bandwidth among all the network ports.
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Which of the following LAN devices receives a signal on one port, and forwards that signal only to the port where the destination device is connected? A. Router B. Switch C. Hub D. Network adapter
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It connects multiple cable segments (or devices), and forwards frames to the appropriate segment. Explanation Switches have multiple ports and can connect multiple segments or devices. The switch forwards frames to the appropriate port. They function similarly to a hub, except instead of sending packets to all ports, switches send packets only to the destination computer's port.
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Which of the following best describes how a switch functions? A. It connects multiple cable segments (or devices), and forwards frames to the appropriate segment. B. It connects multiple cable segments (or devices), and broadcast frames to all of its ports C. It connects mutiple segments of different architectures. It translate frames, and forward them to the appropriate segment D. It connects multiple segments of different architectures
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Hub Explanation A hub and a repeater send received signals out all other ports. These devices do not examine the frame or the packet contents. A switch or a bridge use the MAC address in a frame for forwarding decisions. A router uses the IP address in a packet for forwarding decisions.
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Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? A. Gateway B. Bridge C. Router D. Hub E. Switch
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When a frame enters a port, the source MAC address is copied from the frame header. Explanation Bridges and switches learn addresses by copying the MAC address of the source device and placing it into the MAC address table. The port number which the frame entered is also recorded in the table and associated with the source MAC address. The switch or the bridge cannot record the destination MAC address because it does not know the port that is used to reach the destination device. Bridges and switches operate at Layer 2 and do not use IP addresses (which exist at Layer 3).
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How do switches and bridges learn where devices are located on a network? A. When a frame enters a port, the source IP address is copied from the frame header B. When a frame enters a port, the source MAC address is copied from the frame header C. When a frame enters a port, the destination IP is copied from the frame header D. When a frame enters a port, the destination MAC address is copied from the frame header
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Send the frame out ports 2-8 Explanation Because the switch does not know the port that is used to reach the destination device, it will send the frame out all ports except for the port on which the frame was received. After the switch learns the port that is used to reach the destination device, it will send the frame out only that port.
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An 8-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do? A. Send the frame out ports 2-8 B. Drop the frames C. Send the frame out of the destination port D. Send the frame out of 8 ports
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Add a network card using a PCI slot. Explanation In this case, you should install a network adapter in a PCI slot. Your computer would then use the new network adapter instead of the one integrated on the motherboard. While installing the new card, you should disable the onboard LAN adapter to prevent it from showing in Device Manager. Replacing the motherboard is too expensive when compared to installing a new expansion card. AGP slots are used for video cards, network cards. Clearing the CMOS settings erases the configuration information but does not fix the LAN adapter that is not functioning.
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You have a computer with an onboard LAN adapter. The LAN adapter has failed and you are unable to connect the computer to the network. What should you do? A. Replace the motherboard B. Clear the CMOS settings C. Add a network card using a PCI slot D. Add a network card using a AGP slot
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