CCNA Practice Exam Questions with correct answers

True statements about the operation of a full-duplex Ethernet network CORRECT ANSWER There are no collisions in full-duplex mode. A dedicated switch port is required for each full-duplex node. The host network card and the switch port must be capable of operating in full-duplex mode. Which OSI layer header contains the address of a destination host that is on another network? CORRECT ANSWER Network Layer Which layer of the TCP/IP stack combines the OSI model physical and data link layers? CORRECT ANSWER Network access layer Which protocol uses a connection-oriented service to deliver files between end systems? CORRECT ANSWER FTP What do switches do? CORRECT ANSWER Prevent Ethernet Collisions, Create less collision domains. Mac Address CORRECT ANSWER Physical Address, Layer 2 devices, Which network device functions only at Layer 1 of the OSI model? CORRECT ANSWER Hub Which transport layer protocol provides best-effort delivery service with no acknowledgment receipt required? CORRECT ANSWER UDP