Chapter 3 Comprehension Questions
Which two protocols are service discovery protocols? (Choose two.)
1) DNS 2) DHCP
Which two protocols belong in the TCP/IP model application layer?
1) DNS 2) DHCP
Which three are components of message timing?
1) Flow control 2) Access method 3) Response timeout
Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery?
1) ICMPv4 2) ICMPv6
Which three acronyms/initialisms represent standards organizations? (Choose three.)
1) IEEE 2) IANA 3) IETF
Which two protocols function at the internet layer? (Choose two.)
1) IP 2) ICMP
Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)
1) Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits. 2) Data link layer addresses are physical and network layer addresses are logical. 3) Network layer addresses are either 32 or 128 bits in length.
Which services are provided by the internet layer of the TCP/IP protocol suite?
1) Routing Protocols 2) Messaging 3) Internet Protocol
What are two benefits of using a layered network model? (Choose two.)
1) it prevents technology in one layer from affecting other layers. 2) It assists in protocol design.
What is the process of converting information into the proper form for transmission?
Encoding
Which protocol operates at the network access layer of the TCP/IP model?
Ethernet
True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.
False
True or false? The right-most part of an IP address is used to identify the network that a device belongs to.
False
Which step of the communication process is concerned with properly identifying the address of the sender and receiver?
Formatting
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
A device receives a data link frame with data and processes and removes the Ethernet information. What information would be the next to be processed by the receiving device?
IP at the internet layer
This standards organization is responsible for IP address allocation and domain name management.
Internet Assigned Numbers Authority (IANA)
This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.
Internet Engineering Task Force (IETF)
What is done to an IP packet before it is transmitted over the physical medium?
It is encapsulated in a Layer 2 frame.
This protocol is responsible for guaranteeing the reliable delivery of information.
TCP
True or false. Standards organizations are usually vendor-neutral.
True
True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway.
True
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
Which protocol stack layer encapsulates data into frames?
data link
What process is used to receive transmitted data and convert it into a readable message?
decoding
Which logical address is used for delivery of data to a remote network?
destination IP address
What is the order of the two addresses in the data link frame?
destination MAC, source MAC
What types of standards are developed by the Electronics Industries Alliance (EIA)?
electric wiring and connectors
What is the name of the process of adding protocol information to data as it moves down the protocol stack?
encapsulation
What process is used to place one message inside another message for transfer from the source to the destination?
encapsulation
Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?
multicast
Which type of communication will send a message to a group of host destinations simultaneously?
multicast
What is the general term that is used to describe a piece of data at any layer of a networking model?
protocol data unit
What is the purpose of protocols in data communications?
providing the rules required for a specific type of communication to occur.
BGP and OSPF are examples of which type of protocol?
routing
What is the PDU associated with the transport layer?
segment
What is the process of dividing a large data stream into smaller pieces prior to transmission?
segmentation
What is used to determine the network portion of an IPv4 address?
subnet mask
In computer communication, what is the purpose of message encoding?
to convert information to the appropriate form for transmission
What is the purpose of the sequencing function in network communication?
to uniquely label transmitted segments of data for proper reassembly by the receiver.
UDP and TCP belong to which layer of the TCP/IP protocol?
transport
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?
transport
