12. Interpret a Unified Diff 200-901 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A network engineer is reviewing a unified diff for a device configuration file. The hunk header reads: @@ -12,5 +12,7 @@. The original file has 20 lines. After applying the diff, how many lines will the new version of the file have?

   • A20 lines
   • B27 lines
   • C22 lines
   • D25 lines
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   In a unified diff, what information is typically found in the file header lines (--- and +++ lines)?

   • AThe line numbers of the first and last changed lines
   • BFile names and timestamps of the compared versions
   • CThe permissions and ownership of the files
   • DThe total number of added and removed lines
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A network engineer is applying a unified diff to a configuration file. The diff contains the hunk `@@ -5,4 +5,5 @@` with the following lines: ` hostname R1`, `-interface GigabitEthernet0/0`, `+interface GigabitEthernet0/1`, `+ description Uplink`, ` ip address 192.168.1.1 255.255.255.0`. The engineer notices that the context line ` description Uplink` appears in the diff, but the original file does not contain that line. What is the most likely explanation?

   • AThe diff tool incorrectly included the line as context.
   • BThe diff is malformed and cannot be applied.
   • CThe context line is actually an added line, and the engineer misread the diff.
   • DThe diff was generated against a different version of the file than the one being patched.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A network engineer is reviewing a unified diff for a configuration file. The diff header shows: --- config_v1.txt 2024-05-01 12:00:00 +++ config_v2.txt 2024-05-02 09:30:00 What can be inferred from the header?

   • Aconfig_v2.txt is the original file, and config_v1.txt is the new file.
   • Bconfig_v1.txt was modified after config_v2.txt.
   • CThe diff was generated on May 2, 2024.
   • Dconfig_v1.txt is the original file, and config_v2.txt is the new file.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A network engineer is reviewing a unified diff for a configuration file. The hunk header reads: @@ -15,0 +16,2 @@. What does this header indicate?

   • AThe hunk starts at line 15 in the original and line 16 in the new file, with 2 lines of context.
   • BTwo lines are removed from the original at line 15, and no lines are added.
   • CTwo lines are added at line 16 in the new file, with no lines removed from the original.
   • DOne line is removed from the original and two lines are added in the new file.
   Reveal Solution Discussion Select an answer first