(Reuters) – Juniper Networks, which is being acquired by Hewlett Packard Enterprise, reported fourth-quarter revenue below market expectations on Tuesday, hurt by weak spending by its cloud computing and enterprise clients. The Sunnyvale California-based company reported revenue of $1.37 billion compared to expectations of $1.41 billion, according to LSEG data. Competition from Cisco Systems and Arista Networks and weak spending by wireless carriers and cable operators grappling with an uncertain economy have hurt demand for Juniper’s cloud computing and network security services. However, rev…