Deck 6 Flashcards
Get That MONEY!!! (200 cards)
Pass and Advanced
- Which device works at the third layer of the OSI mode (the network layer)?
Routers.
Pass and Advanced
- Which device works at OSI model layer 7 (the application layer)?
Gateways.
Pass and Advanced
- What is the main function of a concentrator?
To serve as a termination point for cable running from individual nodes in a network.
Pass and Advanced
- What device is a box with a number of connectors to which multiple nodes (PCS) are attached?
A hub.
Pass and Advanced
- What is the object of a modem?
To change the characteristics of a simple sine wave, referred to as a carrier signal.
Pass and Advanced
- What is the device known as that is used to perform the encoding and decoding functions?
A codec, which is simply another black box conversion device that has always been existence in a slightly different form as part of a modem.
Pass and Advanced
- What must you do to attach personal computers to the LAN?
Install a network interface card (NIC) into an empty expansion slot in the PC, install the appropriate software, and attach the network cable to the NIC.
Pass and Advanced
- What needs to be determined before deciding the type of connector to use?
The type of cable and architecture.
Pass and Advanced
- Which cable is the best choice if a secure network is needed?
Fiber optic.
Pass and Advanced
- What cable is identified by a designation number of RG-58?
Coaxial.
Pass and Advanced
- What are the advantages of baseband coaxial systems?
They are inexpensive, simple, easy to install, low maintenance, and allows very high data transmission rates.
Pass and Advanced
- What is one disadvantage of baseband coaxial systems?
They are limited to transmitting digital signals only.
Pass and Advanced
- What signals do broadband systems support?
Data, voice, and video.
Pass and Advanced
- What are the disadvantages of broadband systems?
Their higher installation costs and complex maintenance.
Pass and Advanced
- What provides the physical link between two components?
The connector.
Pass and Advanced
- What does the type of connector needed in a particular situation depend upon?
The components involved and, for networks, on the type of cable and architecture being used.
Pass and Advanced
- What type of connector is used to link two segments of cable in a straight run?
Barrel.
Pass and Advanced
- What type of connector is used to connect telephones to the wall or modem?
RJ.
Pass and Advanced
- What type of connector is used to attach a device to a section of cable?
T.
Pass and Advanced
- An ST connector is rated for what number of matings?
1000
Pass and Advanced
- An SC connector is rated for what number of matings?
1000
Pass and Advanced
- An SMA connector is rated for what number of matings?
200
Pass and Advanced
- In addition to attachment mechanisms, fiber-optic connectors differ in what ways?
Size of the ferrule, keyed connector, number of matings, and whether the fiber must be twisted to make the connection.
Pass and Advanced
- What is the inspection of the components when they are received limited to?
Checking for any physical damage, which includes any damage to the packing material, damage to the case, and hidden damage on the inside of the cabinet.