networking chapter 3
which of the following is a valid MAC address
AB.07.CF.62.16.BD
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?
ARP
which of the following is a valid MAC address
C0-34-FF-15-01-BE
which of the following is the best device to deploy to protect your private network from a public untrusted network?
firewall
you are the administrator of your company's network. You want to prevent unauthorized access to your intranet for the internet.
firewall
you are the network admin for a small organization. Recently, you contracted with ISP
firewall
what type of module might a switch use to allow it to modify the media type supported by a switch port?
gbic sfp
which of the following devices does not segment the network
hub
which of the following best describes how a switch functions?
it connects multiple cable segments or devices and forwards frames to the appropriate segment
which of the following is true about the MAC address?
it is typically represented by hexadecimal numbers it is a 48 bit address
which of the following statements accurately describes how a modem works?
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
at which OSI model layer does a media converter operate?
layer 1
you have a server that has 100basefx network interface card that you need to connect to a switch. The switch only has 100basetx switch ports
media converter
which network component connects a device with the transmission media and allows it to send and receive messages?
network interface card
which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents?
repeater hub
which of the following hardware devices links multiple networks and directs traffic between networks?
router
an 8-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do?
sent the frame out ports 2-8
which of the following is a good reason to install a firewall?
to prevent hackers from accessing your network
what device sends signals from a computer onto a network?
transceiver
how do switches and bridges learn where devices are located on a network
when a frame enters a port, the source MAC address is copied from the frame header.
