Network Access

Which three elements do all communication methods have in common? (Choose three.)

• message destination

• message priority

• message type

• message source

• transmission medium

Which three acronyms/initialisms represent standards organizations? (Choose three.)

• OSI

• MAC

• IEEE

• IANA

• IETF

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

• presentation

• session

• network

• application

• transport

Which statement is true about the TCP/IP and OSI models?

• The TCP/IP transport layer and OSI Layer 4 provide similar services and functions.​

  
  

• The OSI Layer 7 and the TCP/IP application layer provide identical functions.

  
  

• The first three OSI layers describe general services that are also provided by the TCP/IP internet layer.​

  
  

• The TCP/IP network access layer has similar functions to the OSI network layer.​

Which statement defines a data communications protocol?

• an alliance of network device manufacturers

  
  

• an exchange agreement of network devices among vendors

  
  

• a set of rules that govern the communication process

• a set of product standards for types of network devices

  
  

A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.)

• Fiber optic cabling requires specific grounding to be immune to EMI.

  
  

• Fiber optic provides higher data capacity but is more expensive than copper cabling.

• Fiber optic cable is able to withstand rough handling.

  
  

• Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires.

  
  

• Fiber optic cabling is susceptible to loss of signal due to RFI.

  
  

Which two applications are suitable for deploying coaxial cables? (Choose two.)

• to connect PC computers in an office

  
  

• to connect a TV set to the wall plug at home

• to connect data centers with high bandwidth requirements over long distances

  
  

• to connect various components in a satellite communication system

• to connect network devices in backbone networks

  
  

Which data encoding technology is used in fiber-optic cables?

• pulses of light

  
  

• electrical pulses

  
  

• modulation of specific frequencies of electromagnetic waves

  
  

• modulation of electrical voltage

  
  

Which type of network cable is commonly used in backbone networks and telephone companies?

• twisted-pair cable

  
  

• coaxial cable

  
  

• shielded twisted-pair cable

  
  

• fiber-optic cable

Which criterion can be used to select the appropriate type of network media for a network?

• the environment where the selected medium is to be installed

• the cost of the end devices that are used in the network

  
  

• the number of intermediary devices that are installed in the network

  
  

• the types of data that need to be prioritized