CCNA questions with complete solution 2023

CCNA questions with complete solution 2023FTP (port) 20, 21 SSH (port) 22 Telnet (port) 23 SMTP (port) 25 DNS (port) 53 DHCP (port) 67/68 TFTP (port) 69 HTTP (port) 80 POP3 (port) 110 HTTPS (port) 443 IMAP (port) 143 Application (Data) anything that interacts with the network. Online games, P2P file share, chrome, firefox Presentation (Data) how you present the data such file formats as fttp, html Session (Data) starts and stop session, maintains makes sure session is active Transport (Segment) -How the data is sent. (tcp/udp) - it deals with how the application layer will send the information thoughout the network. -It could be reliable and unreliable. Network (Packets) Logical addressing Data Link (Frames) Physical Address (MAC) Physical (Bits) Whatever you can touch in the desk ARP MAC Address sonar Unicast destination address message command arp -a All addresses MAC address -12 characters long -0-9 and A-F -48 hexadecimal address DHCP relay enabled in the router packets it as a unicast Private IP addresses 10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255 Automatic Address (APIPA) 169.254.0.0 - 169.254.255.255 Loopback address 127.0.0.0 - 127.255.255.255 NAT Network Address Translation Class A Class B Class C Class D Class E 1-127 128-191 192-223 Multicast 224-239 Experimental 240-254 Classful Regular Class A, B, and C with their respectful subnet mask. Classless CIDR, different length subnet masks Broadcast Message to all devices Unicast Message to one device Multicast A group of devices ipconfig ...show information ipconfig /all Show all TCP/IP details