IT-Explain 🦾

Question 48: 🔥🦾 May provide security  services such as encryption and decryption -------------------------------------------------------------- A. Applicatiom layer B. Presentation layer C. Network layer

Question 47 : 🔥🦾 Provides services and protocols for electronic mail ,file transfers : -------------------------------------------------------------- A. Network layer B. Transport layer C. Session layer D. Application layer

Question 46 : 🔥🦾 The sub layers in data link -------------------------------------------------------------- A. Medium access control (Mac) B. Manage access control  (Mac) C. Manage attend  control (Mac) D. None

Question 45 : 🔥🦾 Error detection if the data is corrupted the additional bits will longer match the (incorrect) data -------------------------------------------------------------- A. True B. False

Question 44 : 🔥🦾 Asynchronous Transmission Uses start and stop bits so sender knows when data starts -------------------------------------------------------------- A. True B. False

Question 43 : 🔥🦾 optical fibre has Laser frequency about : -------------------------------------------------------------- A. 10^14 hz B. 10^14 Khz C. 10^14 Mhz

Question 42 : 🔥🦾 Microwave requires obstacles between transmitter and receiver -------------------------------------------------------------- A. True B. False

Question 41 : 🔥🦾 Allow application on two different computera to logical connection -------------------------------------------------------------- A. Network layer B. Transport layer C. Session layer D. Application layer

Question 40 : 🔥🦾 LLC part of the Data-link layer   of the osi model -------------------------------------------------------------- A. True B. False

Question 39 : 🔥🦾 MAC part of the network layer  of the osi model -------------------------------------------------------------- A. True B. False

Question 38 : 🔥🦾 Receiver decryption with public key -------------------------------------------------------------- A. True B. False

Question 37 : 🔥🦾 Sender  encryption with  receiver's public key -------------------------------------------------------------- A. True B. False

Question 36 : 🔥🦾 Can decryption with the private key -------------------------------------------------------------- A. True B. False

Question 35 : 🔥🦾 The encryption key may be used to decryption a message -------------------------------------------------------------- A. True B. False

Question 34 : 🔥🦾 The encryption key and decryption key should be same ? -------------------------------------------------------------- A. True B. False

Question 33 : 🔥🦾 Data link layer receiver : -------------------------------------------------------------- A. Assembles them into messages B. Break them into frames C. Assembles them into frames D. Break them into messages

Question 32 : 🔥🦾 Data link layer receiver : -------------------------------------------------------------- A. Hands the frame to the next higher layer B. Hands these frames to the physical layer C. Hands the messages  to the next higher layer D. Hands these messages  to the physical layer

Question 31 : 🔥🦾 Data link layer sender : -------------------------------------------------------------- A. Accepts messages from the higher layer B Hands these frames to the higher layer C. Assembles them into messages

Question 30 : 🔥🦾 Data link layer sender : -------------------------------------------------------------- A. Accepts frame from the higher layer B. Hands these frames to the physical layer C. Assembles them into messages

Question 29 : 🔥🦾 Use in some application such as remote login remote file transfer Application  -------------------------------------------------------------- A. Application  B. Data link C. Session  D. Transport