<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  How can you improve network security? Context: Network security can be improved by using firewalls, VPNs, strong passwords, and regular software updates. Answer: [/INST]By using firewalls, VPNs, strong passwords, and regular software updates.</s>