{"success":true,"data":{"ext":"pkt","name":"PKT","description":"PKT is a file format used by Cisco Packet Tracer, the network simulation software developed and maintained by Cisco Systems. It stores saved network topologies, device configurations, and lab exercises for training, coursework, and certification practice. The format is generally safe, though it may contain embedded activities or references to external resources, so files from untrusted sources should be opened with care.","mime":[],"risk_level":"Safe","signatures":[{"hex":"78 56 34","offset":0,"sources":[{"name":"Wikipedia","url":"https://en.wikipedia.org/wiki/List_of_file_signatures"}]}],"related":["pbt","pdt","pea","peb","pet","pgt"],"usage":{"python":"def is_pkt(file_path: str) -> bool:\n    \"\"\"Check if file is a valid PKT by magic bytes.\"\"\"\n    signature = bytes([0x78, 0x56, 0x34])\n    with open(file_path, \"rb\") as f:\n        return f.read(3) == signature","node":"function isPKT(buffer: Buffer): boolean {\n  const signature = Buffer.from([0x78, 0x56, 0x34]);\n  return buffer.subarray(0, 3).equals(signature);\n}","go":"func IsPKT(data []byte) bool {\n    signature := []byte{0x78, 0x56, 0x34}\n    if len(data) < 3 {\n        return false\n    }\n    return bytes.Equal(data[:3], signature)\n}"}}}