<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:  Describe the function of a router in a network. Context: The function of a router in a network is to direct traffic between different networks and provide internet connectivity. Answer: [/INST]It directs traffic between different networks and provides internet connectivity.</s>