Cisco CCNA exam Cram Sheet
On May 20, 2018 by TechTipsCisco CCNA exam Cram Sheet General Networking Port Numbers Port Number Layer 4 Protocol Suite Application 20 TCP FTP Data 21 TCP FTP Program 23 TCP Telnet 25 TCP SMTP 53 TCP/UDP DNS 69 UDP TFTP 80 TCP HTTP Ping Responses ! – Reply from target address . – Timeout U – Destination unreachable C
Cisco ACL Revision
On May 11, 2018 by TechTipsAccess Control Lists (ACL) Access Control Lists are used to: Prioritise traffic Restrict or reduce updates Provide basic security Block types of traffic Access control list placement Standard ACLs – Place as close to destination as possible. Extended ACLs – Place as close to source of traffic as possible. Only one ACL per port per
CCNA basic switch configuration commands
On January 14, 2012 by TechTipsCisco basic configuration commands (CCNA) Command descriptions switch>? The ? works here the same as in a router Used to get the list of all available commands switch>enable User mode, same as a router switch# Privileged mode switch#disable Leaves privileged mode switch>exit Leaves user mode switch#show version Displays information about software and hardware. switch#show flash: Displays