Which feature enables security in vty lines? 08/09/2017 – by Mod_GuideK 0 Which feature enables security in vty lines? A. Exec-time out B. Logging C. Transport out D. Username and password SHOW ANSWERSCorrect Answer: D Explanation/Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfpass.pdf