Huawei Cert Datacom Associate-Network Technology & Device Set 7

Host Address ✘ Private Address ✘ Network Address ✘ subnet address ✔

SSAP DSAP Address Control

Definition MAC address Providing an interface with the upper layer protocol communication Error correction Flow Control

Source Network Address the destination network address destination port number destination MAC address source port number

TTL maximum possible value is 65535 Under normalcircumstances, the router should not be received from the interface the packet TTL = 0 TTL is mainly to prevent the IP packet forwarding loops in the network, wasting network bandwidth IP packets through a network of each device, including Hub, LAN SWITCH and router, TTL value will besubtracted from the value of certain

confirmation (acknowledgement) mechanism caching (buffering) source quench packets (source quench messages) Retransmission (retransmit) mechanism

confirmation (acknowledgement) technology caching (buffering) technology source quench packets (source quench messages) window mechanism (windowing)

Internal Control Mail Protocol ✘ IntranetControl Message Protocol ✘ Internet Connection Message Protocol ✘ Internet Control Message Protocol ✔

ICMP protocol based on MAC address to find the corresponding IP address ✘ ICMP protocol to public IP addresses to private network IP address ✘ ICMP protocol is used for monitoring data transmission errors in the case reported ✘ ICMP protocol to centrally manage the network IP address assignment ✔

Delay ✘ Error ✘ Jitter ✘ Source IP ✔