Deck 2: Network Hardware Essentials

Question 1

If a router receives a packet and it does not have an entry in its routing table for the destination network, it will send the packet to its default route, if configured.

Answer 1

True

Question 2

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

Answer 2

True

Question 3

You cannot connect a hub to another hub unless it has an uplink port.

Answer 3

False

Question 4

A wireless access point is most like which other network device, in that all computers send signals through it to communicate with other computers?

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

Question 5

Why would you need to use a repeater?

A) You need to connect two networks together to make an internetwork.
B) Your network is too large, and you need to decrease the size of the broadcast domain.
C) You want to maximize the available bandwidth.
D) You need to add a group of computers to your network, and the distance is too far for normal means of communication.

Question 6

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

Question 7

When referring to network bandwidth, what is the basic unit of measurement?

A) bytes per second
B) bits per second
C) bandwidth per second
D) bytes per minute

Question 8

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.

Question 9

Routers do not forward broadcast packets.

Question 10

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

Question 11

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

Question 12

What is a packet called that is intended for only one individual computer?

A) broadcast
B) unicast
C) multicast
D) anycast

Question 13

How does a switch "learn" MAC addresses?

A) All the MAC addresses must be entered manually.
B) The switch comes loaded with the most frequently used addresses.
C) The switch reads each frame and makes a note of where each MAC address came from.
D) The switch uses a mathematical formula to determine what the MAC address would be for each computer connected to it.

Question 14

What does a switch store in its switching table?

A) the source MAC address of a frame and the port it was received on
B) the destination MAC address of a frame and the port it was received on
C) the source IP address of a frame and the port it was received on
D) the destination IP address of a frame and the port it was received on

Question 15

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

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

Question 16

Why is the use of a switch preferred over a hub?

A) Devices on a hub have to share the available bandwidth.
B) Switches are intelligent; they read the frame and determine where to send it.
C) Switches can operate in full-duplex mode.
D) All of the above.

Question 17

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

Question 18

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

Question 19

A MAC address is composed of two 24-bit numbers. What does the first 24-bit number represent?

A) It's a unique serial number assigned by the manufacturer.
B) It's the address it uses for a multicast packet.
C) It's the decryption key used for security purposes.
D) It's the organizationally unique identifier for the manufacturer of the device.

Question 20

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

Question 21

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

Question 22

MATCHING
Match each item with a statement below:

Question 23

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

Question 24

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

Question 25

What is a default gateway?

Question 26

What is the difference between a switch and a router?

Question 27

What is a broadcast frame?

Question 28

What are the major tasks that a NIC performs?

Question 29

Why is the NIC considered the "gatekeeper"?

Question 30

The SSID is configured on which of the following so that it can be distinguished from other available wireless networks?

A) router
B) access point
C) switch
D) repeater

Question 31

What does a router keep in its routing table?

Question 32

What type of indicator lights would you find on a hub?

A) network activity
B) link status
C) signal strength
D) uplink
E) collision

Question 33

What is the importance of a default route?

Question 34

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.

Question 35

A switch operating in ___________ mode can send and receive data at the same time.

Question 36

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

Question 37

List the steps that a switch performs for each frame.

Question 38

The network ____________ is a measurement of the amount of data that can pass through a network in a certain period of time.

Question 39

What command would you issue from the command prompt to test whether your computer has connectivity to the network?

A) ping IPaddress
B) arp -d IPaddress
C) ipconfig IPaddress
D) ipconfig /all

Question 40

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

Question 41

What is the MAC address of a computer?