CCNA OSI, TCP

How do TCP and UDP differ in the way that they establish a connection between two endpoints?

• TCP uses the three-way handshake, and UDP does not guarantee message delivery

• TCP uses synchronization packets, and UDP uses acknowledgment packets

• UDP provides reliable message transfer, and TCP is a connectionless protocol

• UDP uses SYN, SYN ACK, and FIN bits in the frame header while TCP uses SYN, SYN ACK, and ACK bits

What is the default behavior of a Layer 2 switch when a frame with an unknown destination MAC address is received?

• The Layer 2 switch forwards the packet and adds the destination MAC address to its MAC address table.

• The Layer 2 switch sends a copy of a packet to CPU for destination MAC address learning

• The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN

• The Layer 2 switch drops the received frame

What is a benefit of using a Cisco Wireless LAN Controller

• It eliminates the need to configure each access point individually

• Central AP management requires more complex configurations

• Unique SSIDs cannot use the same authentication method

• It supports autonomous and lightweight APs

What are two descriptions of three-tier network topologies? (Choose two.)

• The distribution layer runs Layer 2 and Layer 3 technologies

• The network core is designed to maintain continuous connectivity when devices fail

• The access layer manages routing between devices in different domains

• The core layer maintains wired connections for each host

• The core and distribution layers perform the same functions

Which two statements about the purpose of the OSI model are accurate? (Choose two.)

• Defines the network functions that occur at each layer

• Facilitates an understanding of how information travels throughout a network

• Changes in one layer do not impact other layer

• Ensures reliable data delivery through its layered approach