Entry criteria is nothing but how to approach particular 
thing?

suppose in Test plan entry criteria is functional 
description and exit criteria is approach

Entry criteria: Before Integration criteria all unit test 
cases should be passed and Unit testing should be completed.

Exit: When Integrated modules are working as per their 
requirement and all integration test cases should be passed 
without any critical/Major defects

unit testing output is entrylevel criteria for integration 
testing.the same output is exit level criteria for unit 
tsting.

Entry and Exit criteria means

Entry includes Pre Conditions like SRS(Usecases, Activity 
diagram, mockup screens & HLDD, LLDD.

Exit includes Post Conditions like Traceability matrix and 
Sign off.

Entry criteria start with R&A phase

Evaluating exit criteria has the following major tasks:
o Checking test logs against the exit criteria specified in 
test planning.
o Assessing if more tests are needed or if the exit 
criteria specified should be changed.
o Writing a test summary report for stakeholders.