CCNA Practice Questions WITH COMPLETE SOLUTIONS

Using direct sequence spread spectrum, which three 2-4 Ghz channels are used to limit collisions. CORRECT ANSWERS: 1, 6, 11 A device detects two stations transmitting frames at the same time. This condition occurs after the first 64 bytes of the frame is received. Which interface counter increments? CORRECT ANSWERS: Late collision FTP CORRECT ANSWERS: Ports 20 and 21 Provides reliability when loading an IOS image upon boot up. Uses TCP TFTP CORRECT ANSWERS: Port 69 Does not require user authentication. Uses UDP Which subnet mask would make room for 20 hosts. CORRECT ANSWERS: 255.255.255.224 What is the expected outcome when an EUI-64 address is generated? CORRECT ANSWERS: The seventh bit of the original MAC address of the interface is inverted. How does CAPWAP communicate between an access point in local mode and a WLC? CORRECT ANSWERS: The access point has the ability to link to any switch in the network, assuming connectivity to the WLC. What is a characteristic of spine-and-leaf architecture? CORRECT ANSWERS: Each device is separated by the same number of hops. An office has 8 floors with approximately 30-40 users per floor .What command must be configured on the router Switched Virtual Interface to use address space efficiently? CORRECT ANSWERS: ip address 192.168.0.0 255.255.255.128 In which way does a spine-and-leaf architecture allow for scalability in a network when additional access ports are required? CORRECT ANSWERS: A leaf switch can be added with connections to every spine switch. How do TCP and UDP differ in the way they guarantee packet delivery? CORRECT ANSWERS: TCP uses checksum, acknowledgements, and retransmissions, and UDP uses checksums only.