Introduction:
India is a country located in South Asia and shares its borders with several neighboring countries. However, there is one neighboring country that does not share a land boundary with India, which is Sri Lanka.

Explanation:
Sri Lanka:
- Sri Lanka is an island nation located in the Indian Ocean, southeast of India.
- It is separated from India by the Palk Strait, which is a narrow stretch of water.
- The distance between India and Sri Lanka is approximately 31 kilometers at its closest point.
- To travel between India and Sri Lanka, one can either take a flight or use ferry services.

Other Neighboring Countries:
China:
- China is a neighboring country of India and shares a land boundary with India.
- It is located in the northeastern part of India and shares its borders with several Indian states including Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh.

Myanmar:
- Myanmar is another neighboring country of India and shares a land boundary with India.
- It is located in the east of India and shares its borders with four Indian states - Arunachal Pradesh, Nagaland, Manipur, and Mizoram.

Nepal:
- Nepal is a landlocked country located in the north of India and shares a land boundary with India.
- It is bordered by five Indian states - Uttarakhand, Uttar Pradesh, Bihar, West Bengal, and Sikkim.

Conclusion:
Out of the given options, Sri Lanka is the neighboring country that does not share a land boundary with India. It is separated from India by the Palk Strait, and one can travel between the two countries by air or sea.