CIST 1401 Section 3.1-3.3 PQ

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Which network component connects a device to transmission media and allows the device to send and receive messages?
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Terms in this set (29)
Which network component connects a device to transmission media and allows the device to send and receive messages?
Network interface card (NIC)
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.
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
Which device sends signals from a computer onto a network?
Transceiver
At which OSI model layer does a media converter operate?
Layer 1
You want a switch to have the ability to modify the media type the switch port supports. Which type of module might you use to make this possible?
GBIC & SFP
Which of the following is a valid MAC address?
C0-34-FF-15-01-8E
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 that has 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 true about the MAC address? (Select two.)
It is typically represented by hexadecimal numbers.

It is a 48-bit address.
Which of the following best describes how a switch functions?It connects multiple cable segments (or devices) and forwards frames to the appropriate segment.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.An eight-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do?Send the frame out ports two through eight.Which of the following devices does not segment the network?HubWhich of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.)Hub & RepeaterAt which OSI layer does a router operate to forward network messages?NetworkYour company purchases a new bridge that filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning?Data LinkAt which of the following OSI layers does a router operate?Layer 3Which of the following devices operate at the Data Link layer of the OSI model? (Select three.)Bridges, switches, and NICsWhich of the following devices operate at OSI model Layer 2? (Select two.)Network interface card and switchA switch is associated with which OSI model layer?Data LinkAt which layer of the OSI model do hubs operate?PhysicalWhich of the following devices operates at the OSI model Layer 2?SwitchWhich of the following devices operates at the OSI model Layer 1?HubWhich of the following hardware devices links multiple networks and directs traffic between networks?RouterYou are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the internet to provide users with internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again?FirewallWhich of the following is the best device to deploy if you want to protect your private network from a public untrusted network?FirewallWhich of the following is a good reason to install a firewall?To prevent hackers from accessing your network.You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the internet. Which of the following should you implement?Firewall