220-1101 Networking Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Laser: Uses toner and fuser to bond powder to paper

  Why this is correct

  Laser printers create an image on a photoconductive drum by discharging a charge with a laser beam; toner, a dry powder of pigment and plastic, clings to the discharged areas and is then fused to the paper by heat and pressure. This is an electrophotographic (xerographic) process that relies on static electricity and powdered toner, not liquid ink or wax.

• ✓

  Inkjet: Uses tiny nozzles to spray liquid ink

  Why this is correct

  Inkjet printing propels tiny droplets of liquid ink through nozzles in a print head directly onto paper. Thermal inkjet models heat the ink to form a bubble that ejects the drop, while piezoelectric models deform a crystal to pump ink out, producing high-resolution color images from liquid cyan, magenta, yellow, and black inks.

• ✓

  Dot Matrix: Uses pins striking ribbon to transfer ink

  Why this is correct

  Dot matrix is an impact printer that uses a print head containing a vertical column of pins; electromagnets fire the pins against an ink ribbon, pressing ribbon ink onto the paper in patterns of dots. Because the pins physically strike the paper, this technology can print through multi-part forms and carbonless copies, something non-impact printers cannot do.

• ✓

  Thermal: Uses heat to transfer ink or activate paper

  Why this is correct

  Thermal printing applies heat through a printhead to create images in one of two ways: direct thermal activates a heat-sensitive chemical coating on special paper, while thermal transfer melts a wax or resin ribbon onto the media. Both methods require no toner and no liquid ink, and they differ fundamentally from laser fusing, which uses powder rather than heat-activated coatings.

• ✗

  Laser: Uses heat to melt wax onto paper

  Why it's wrong here

  This is incorrect because laser printing does not use wax as its marking material. Heat used to melt wax onto paper is characteristic of thermal transfer printing, where a wax-resin ribbon is heated to bond the wax to the media; a laser printer instead melts dry toner powder onto the page with a fuser assembly.

• ✗

  Inkjet: Uses toner and fuser

  Why it's wrong here

  This is incorrect because toner and a fuser are the defining components of a laser printer, not an inkjet. An inkjet print head ejects liquid ink from nozzles and never handles powdered toner; if a device uses powdered toner and a fuser assembly, it is by definition an electrophotographic laser printer, so this pairing misidentifies the technology.

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