PCEP-30-02 3.2 Collect and Process Data Using Tuples PCEP-30 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which statement correctly describes a difference between tuples and lists?

   • ATuples are immutable, while lists are mutable.
   • BLists are ordered, while tuples are unordered.
   • CLists are faster than tuples for indexing.
   • DTuples can contain only one data type, while lists can contain mixed types.
   Reveal Solution Discussion Select an answer first
2. 7application · easy

   A developer has a list `data = [(1, 'a'), (2, 'b'), (3, 'c')]` and needs to extract the string 'b'. Which expression correctly retrieves this value?

   • Adata[2][1]
   • Bdata[1][1]
   • Cdata[1][0]
   • Ddata[0][1]
   Reveal Solution Discussion Select an answer first
4. 8application · easy

   A data analyst has a list of coordinate pairs: `points = [(1, 2), (3, 4), (5, 6)]`. They need to access the y-coordinate of the third point (value 6). Which expression retrieves this value?

   • Apoints[2][0]
   • Bpoints[1][2]
   • Cpoints[3][1]
   • Dpoints[2][1]
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   Which operation is NOT allowed on a tuple?

   • At[1]
   • Bt + (4,)
   • Ct.append(4)
   • Dlen(t)
   Reveal Solution Discussion Select an answer first
6. 10application · easy

   A developer has a tuple `t = ('a', 'b', 'c', 'd', 'e')` and needs to access the second-to-last element. Which expression correctly retrieves this value?

   • At[-1]
   • Bt[-2]
   • Ct[3]
   • Dt[4]
   Reveal Solution Discussion Select an answer first