diff --git a/src/main/java/com/example/questionbank/web/rest/dto/ExamAttemptStartResult.java b/src/main/java/com/example/questionbank/web/rest/dto/ExamAttemptStartResult.java
new file mode 100644
index 0000000..b697d9a
--- /dev/null
+++ b/src/main/java/com/example/questionbank/web/rest/dto/ExamAttemptStartResult.java
@@ -0,0 +1,5 @@
+package com.example.questionbank.web.rest.dto;
+
+import java.time.Instant;
+
+public record ExamAttemptStartResult(Long attemptId, Instant startedAt) {}
diff --git a/src/main/java/com/example/questionbank/web/rest/dto/StartExamRequest.java b/src/main/java/com/example/questionbank/web/rest/dto/StartExamRequest.java
new file mode 100644
index 0000000..211c40e
--- /dev/null
+++ b/src/main/java/com/example/questionbank/web/rest/dto/StartExamRequest.java
@@ -0,0 +1,5 @@
+package com.example.questionbank.web.rest.dto;
+
+import jakarta.validation.constraints.NotNull;
+
+public record StartExamRequest(@NotNull Long subjectId) {}