Chapter 3: Network Protocols and Communications

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

1) DNS 2) FTP 3) DHCP

Which three acronyms/initialisms represent standards organizations? (Choose three.)

1) IANA 2) IEEE 3) IETF

What three requirements are defined by the protocols used in network communications to allow message transmission across a network? (Choose three.)

1) Message encoding 2) Message size 3) Delivery options

Fill in the blank. The MAC address of a PC does not change when the PC is moved to a different network because the MAC address is embedded in the _______________ of the PC.

1) NIC 2) Network interface card 3) Network card 4) Ethernet NIC 5) Ethernet network interface card 6) Ethernet network card

Which IEEE standard enables a wireless NIC to connect to a wireless AP that is made by a different manufacturer?

802.11

What is an advantage of network devices using open standard protocols?

A client host and a server running different operating systems can successfully exchange data.

Which protocol is used by a computer to find the MAC address of the default gateway on an Ethernet network?

ARP

What statement describes the function of the Address Resolution Protocol?

ARP is used to discover the MAC address of any host on the local network.

Which logical address is used for delivery of data to a remote network?

Destination IP address

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

Destination MAC address

What is a benefit of using a layered model for network communications?

Fostering competition among device and software vendors by enforcing the compatibility of their products

A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?

HTTP, TCP, IP, Ethernet

This organization is responsible for overseeing and managing IP address allocation, domain name management, and protocol identifiers.

IANA

This organization is the largest developer of international standards in the world for a wide variety of products and services. It is known for its Open Systems Interconnection (OSI) reference model.

ISO

What layer of the TCP/IP protocol model determines the best path through the network?

Internet

What is the purpose of protocols in data communications?

Providing the rules required for a specific type of communication to occur

Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?

Segments are sent from the transport layer to the internet layer.

A user is viewing an HTML document located on a web server. What protocol segments the messages and manages the segments in the individual conversation between the web server and the web client?

TCP

Which protocol is responsible for controlling the size and rate of the HTTP messages exchanged between server and client?

TCP

Which statement is true about the TCP/IP and OSI models?

The TCP/IP transport layer and OSI Layer 4 provide similar services and functions.

Which statement is true about the TCP/IP and OSI models?​

The TCP/IP transport layer and OSI Layer 4 provide similar services and functions.​

Why are open standards important in the data communications industry?

They enable interoperability between software and hardware from different vendors.

What is a function of Layer 4 of the OSI model?

To describe the ordered and reliable delivery of data between source and destination

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

broadcast

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

broadcast

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

data link layer

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

destination MAC address

What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?

flow control

Which PDU format is used when bits are received from the network medium by the NIC of a host?

frame

What type of delivery uses data link layer addresses?

local delivery

Which address provides a unique host address for data communications at the internet layer?

logical address

A computer in a given network is communicating with a specific group of computers. What type of communication is this?

multicast

What type of message is sent to a specific group of hosts?

multicast

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

network layer

What is the general term that is used to describe a piece of data at any layer of a networking model?

protocol data unit

Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?

segment

If the default gateway is configured incorrectly on the host, what is the impact on communications?

The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

transport