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The function of a repeater is to extend the range of an existing network.

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In a computer's IP address settings, the _____________ gateway is the address of the router to which a computer sends all packets that are intended for networks outside of its own.

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Before a computer can transmit data on a wireless network in some cases, it must send What type of signal to the AP?


A) RTS
B) ARP
C) CTS
D) DNS

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A __________ frame is a message that is intended to be processed by all devices on the LAN.

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What is the MAC address of a computer?

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the MAC address is a number that is burn...

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Why is the NIC considered the "gatekeeper"?

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the NIC's responsibility is to examine e...

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What are the major tasks that a NIC performs?

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A NIC, along with its driver, provides y...

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Which of the following is NOT a function of a hub?


A) cleans up the signal
B) transmits the signal to the correct port
C) receives the signal from a connected computer on one of its ports
D) regenerates the signal

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What command issued from the command prompt will show the route that a packet travels from the issuing computer to another computer?


A) route
B) tracert
C) ipconfig
D) arp

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B

Just as a switch keeps records of MAC addresses that it has learned, so does your computer. What protocol does your computer use to learn MAC addresses?


A) ARP
B) ICMP
C) DHCP
D) IP

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What component of the computer provides it with a MAC address?


A) motherboard
B) NIC
C) CPU
D) BIOS

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What does it usually mean when the activity light on a switch is blinking?


A) It is malfunctioning.
B) It is ready to receive data.
C) It is communicating with the network.
D) A collision is imminent.

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The "Locally Administered Address" can be used to override the burned-in __________ address.

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What is a broadcast frame?

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A broadcast frame is a frame that has a ...

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What are the major differences between a hub and a switch?

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the major difference is that switches are intelligent. they examine each frame that they receive for the destination MAC address and then send the frame out the correct port for that address. A hub simply accepts a frame from one of its ports and then sends it out all ports. A switch also keeps a table of MAC addresses so that it knows where to send a frame. Because a switch can control where it sends a frame, devices that are connected to a switch can communicate at the same time, allowing each device to access the full network bandwidth. With a hub, only one device can transmit at a time so the bandwidth is shared among all connected devices. Also, because a switch controls the flow of frames, there is little chance of a collision. In a hub, collisions might occur frequently when under heavy use.

When a NIC is in "promiscuous" mode, it will process only the frames in which the destination MAC address matches its own MAC address.

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Which of the following are features of a router? (Choose all that apply)


A) connects computers to the LAN
B) connects LANs to one another
C) works with MAC addresses
D) forwards broadcast packets
E) works with packets instead of frames

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What is the purpose of the default route?


A) It serves as a guideline for how to configure routes.
B) It's a route set by Microsoft so that all information comes to their servers first.
C) It's where the router sends all packets with destinations of which it has no knowledge.
D) None of the above

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When a frame is received, which component reads the source and destination MAC addresses, looks up the destination to determine where to send the frame, and forwards it out the correct port?


A) router
B) switch
C) repeater
D) hub

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B

What is the importance of a default route?

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When a router receives a packet, it look...

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