Chapter 3: Network Protocols and Communications

What type of communication will send a message to all devices on a local area network?

• Broadcast
• Unicast
• Multicast
• EveryoneCast

Why are open standards important in the data communications industry?

• They are required for devices to gain access to the Internet. 
•  They eliminate the threat of security breaches. 
• They enable interoperability between software and hardware from different vendors.
• They encourage network organizations to develop proprietary software to retain their competitive edge.

At which layer of the OSI model would a physical address be encapsulated?

•  physical layer 
•  data link layer 
•  network layer 
•  transport layer 

Which message delivery option is used when all devices need to receive the same message simultaneously?

•  duplex 
•  unicast 
• multicast 
•  broadcast 

What is an advantage of using standards to develop and implement protocols?

• A particular protocol can only be implemented by one manufacturer.
• Products from different manufacturers can interoperate successfully.
• Different manufacturers are free to apply different requirements when implementing a protocol.
  
• Standards provide flexibility for manufacturers to create devices that comply with unique requirements.

Which address does a NIC use when deciding whether to accept a frame?

• destination IP address
• destination MAC address
• source MAC address
• source IP address

Which characteristic describes the default gateway of a host computer?

• the logical address of the router interface on the same network as the host computer
• the physical address of the switch interface connected to the host computer
• the physical address of the router interface on the same network as the host computer
• the logical address assigned to the switch interface connected to the router

What application layer protocol is part of the TCP/IP protocol suite?

• ARP
• PPP
• NAT
• FTP

Refer to the exhibit. HostA is attempting to contact ServerB. Which statement correctly describes the addressing that HostA will generate in the process?

• A packet with the destination IP address of ServerB.
• A frame with the destination MAC address of ServerB.
• A packet with the destination IP address of RouterB.
•  packet with the destination IP address of RouterA.

What is Message Sizing?

• The process of determining when to begin sending messages on a network
• The process of breaking up a long message into individual pieces before being sent over the network
• The process of placing one message format inside another message format