Networking Components Flashcards
What does a network interface card add to a computer’s functionality?
It provides faster communication between the CPU and the hard disk.
It provides the capability to communicate across a phone line to another computer.
It provides the capability to communicate with other computers across a network medium.
It provides the capability to communicate with other computers across a network medium.
A network card provides the capability to communicate with other computers across a network medium such as a CAT 5 cable. The network card connects to the cable using a transceiver, which is responsible for sending and receiving the electrical signals on the wire. Network interface cards (NICs) are known by a variety of names, including network adapters, network cards, network adapter boards, and media access cards. Regardless of the name, they function by enabling computers to communicate across a network. NICs are often defined by the following criteria: 1) the type of data link protocol they support, such as an Ethernet adapter or a Token Ring adapter; 2) the type of medium to which they connect, such as TP or thinnet; and 3) the data bus for which they were designed, such as ISA, PCI, or USB
If a card has the capability to connect to more than one kind of medium, you might have to set which of the following in order to ensure connectivity?
IRQ setting
Link light on/off setting
Transceiver-type setting
Transceiver-type setting
The transceiver-type setting is required for network adapters that are capable of attaching to more than one media type. Typical cards of this nature include Ethernet cards that have both twisted-pair and coaxial connectors. This is one of the more common oversights in configuring a NIC and renders the card nonfunctional if configured for the wrong media connection. To alleviate this problem, some cards of this type have an auto setting that causes the card to search for the transceiver that has media connected to it. From a troubleshooting point of view, you should be prepared for the auto setting not to be working, and you may need to manually specify the transceiver type
When troubleshooting to find out why a network card will not connect to the network, which of the following would you check first?
Driver
Link light
Transceiver-type setting
Link light
When troubleshooting any kind of problem, you want to check the easy stuff first. When it comes to network cards, the first thing you want to check is the link light on the back of the computer to verify that there is an actual connection to the network
Which of the following is an example of a layer-2 address?
192.168.2.5
COMPUTER100
00-0D-60-48-53-9E
00-0D-60-48-53-9E
A layer-2 address is a MAC address and looks like 00-0D-60-48-53-9E
Which of the following types of hubs does not regenerate the signal and therefore is not a repeater?
Active hub
Hybrid hub
Passive hub
Passive hub
The function of a passive hub is simply to receive data from one port of the hub and send it out to the other ports. For example, an eight-port hub receives data from port 3 and then resends that data to ports 1, 2, 4, 5, 6, 7, and 8. It is as simple as that. A passive hub contains no power source or electrical components. There is no signal processing. It simply attaches the ports internally and enables communication to flow through the network
Which network component is used to extend the distance the signal can travel by regenerating the signal?
Passive hub
IRQ
Repeater
Repeater
Repeaters can be used to extend the length of the maximum distance of the different types of cables because when a signal reaches a repeater, the repeater regenerates the signal
Which type of hub enables more than one type of cable or medium to connect to it?
Passive
Active
Hybrid
Hybrid
A hybrid hub is one that can use many types of cables. A popular example of a hybrid hub is a hub that has connectors for thinnet and twisted-pair cabling
When data is sent to a system on a hub, the data is sent to which port(s) on the hub?
The port of the destination system
All ports on the immediate hub, but not any linked hubs
All ports on the immediate hub and any linked hubs
All ports on the immediate hub and any linked hubs
Remember that with hubs, when a data signal reaches the hub, the hub sends the signal throughout the entire network bus, which includes ports on that hub and any linked hubs. Hubs perform no filtering of traffic, which is what a switch offers!
Which type of network component enables each device to have the full bandwidth of the medium when transmitting?
Hub
Repeater
Switch
Switch
Switching is a fairly involved process that allows the device to have the full bandwidth when transmitting
When data is sent to a known system on a switch, the data is sent to what port(s)?
The port of the destination system
All ports on the immediate switch, but not any uplinked switches
All ports on the immediate switch and any uplinked switches
The port of the destination system
A switch is different from a hub in the sense that with a switch, the data is sent only to the port that hosts the destination system. This minimizes network traffic and increases throughput on the network
Which layer of the OSI model does a bridge run at?
Layer 4
Layer 3
Layer 2
Layer 2
Because a bridge works with MAC addresses, it is considered a layer-2 device
Which networking feature allows you to group ports on a switch to create a broadcast domain?
WANs
VLANs
MANs
VLANs
A VLAN is a way to group ports on a switch so that each grouping is its own virtual network. Systems can communicate only with other systems on their own VLAN, which includes broadcast traffic. If a system sends broadcast traffic on the wire, it will be sent only to other ports on the same VLAN
Which layer of the OSI model does a router run at?
Layer 4
Layer 1
Layer 3
Layer 3
A router runs at layer 3 of the OSI model
Which of the following layers does a gateway run at? (Choose the best answer.)
Layer 4
Layer 1
Layer 5
All layers
All layers
A gateway can run at any layer of the OSI model, such as layer 4, 5, 6, or 7, depending on what it is translating. It is very popular in the networking world for layers 4, 5, 6, and 7 to be used, but be aware that the gateway could run at any layer
Which type of device is responsible for connecting dissimilar networking environments together?
Router
Bridge
Gateway
Gateway
A gateway is responsible for converting data from one format to another to allow dissimilar networking environments to communicate
