(Reuters) - Cisco Systems Inc reported second-quarter revenue that beat Wall Street estimates on Wednesday, as the network gear maker benefited from its shift to newer businesses such as application software and cyber security.The company reported net income of $2.8 billion (2.18 billion pounds), or 63 cents per share, in its quarter ended Jan. 26, compared with a loss of $8.78 billion, or $1.78 per share, a year earlier, when it took a charge of $11.1 billion related to the new U.S. tax..