A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?()
- A session
- B network
- C physical
- D data link
- E transport
A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?()
1、The receiver used in a refrigeration s
The receiver used in a refrigeration system()Astores liquid refrigerantBcollects non-condensable gasesCallows refrigerant sub-coolingDprevents compressor surging
2、A receiving host computes the checksum
A receiving host computes the checksum on a frame and determines that the frame is damaged.The frame is then discarded.At which OSI layer did this happen?()A sessionB networkC PhysicalD data linkE Transport
A user receives the following error while executing a query:ORA­01555:snapshot too oldWhich two&ens...
4、The scavenge air receiver is of a simp
The scavenge air receiver is of a simplified and modular design with integral non-return flaps, hanging cooler and two auxiliary air blowers()AdozensBparcelsCbundlesDgallo
A receiving host computes the checksum on a frame and  determines that the frame&...
6、If a host on a network has the address
If a host on a network has the address 172.16.45.14/30, what is the address of the subnetwork to which this host belongs?()A 172.16.45.0B 172.16.45.4C 172.16.45.8D 172.16.45.12E 172.16.45.18