Which of the following crystals exhibits both Schottky and Frenkel defects?

Which type of crystal defect is observed in the diagram given below?
$Na^{+} Cl^{-} Na^{+} Cl^{-} Na^{+} Cl^{-}$
$Cl^{-} \square Cl^{-} Na^{+} \square Na^{+}$
$Na^{+} Cl^{-} \square Cl^{-} Na^{+} Cl^{-}$
$Cl^{-} Na^{+} Cl^{-} Na^{+} \square Na^{+}$

Which of the following is $NOT$ a characteristic of Schottky defect?

Select the incorrect statement.

When electrons are trapped into the crystal in anion vacancy,the defect is known as

Identify the defect developed when an ion of an ionic compound is missing from its regular site and occupies an interstitial position between lattice points.