Module 3 - Protocols and Models Flashcards
What is the process of converting information into the proper form for transmission?
Formatting
Encoding
Encapsulation
Encoding
Which step of the communication process is concerned with properly identifying the address of the sender and receiver?
Formatting
Encoding
Encapsulation
Formatting
Which three are components of message timing? (Choose three.)
Flow control
Sequence numbers
Access method
Retransmit time
Response timeout
- Flow control
- Access method
- Response timeout
Which two protocols are service discovery protocols? (Choose two.)
DNS
TCP
SSH
DHCP
- DNS
- DHCP
BGP and OSPF are examples of which type of protocol?
network communication
network security
routing
service discovery
routing
Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?
Unicast
Multicast
Broadcast
Multicast
This protocol is responsible for guaranteeing the reliable delivery of information.
TCP
IP
HTTP
Ethernet
TCP
Which two protocols belong in the TCP/IP model application layer?
EIGRP
DNS
OSPF
ICMP
DHCP
- DNS
- DHCP
What is the purpose of the sequencing function in network communication?
to uniquely label transmitted segments of data for proper reassembly by the receiver
to determine if data is corrupted during transmission
to ensure data flows at an efficient rate between sender and receiver
to guarantee delivery of data
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?
application
transport
internet
network access
transport
Which protocol operates at the network access layer of the TCP/IP model?
HTTP
IP
DNS
Ethernet
Ethernet
Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)
IPv4
TCP
ICMPv4
IPv6
UDP
ICMPv6
- ICMPv4
- ICMPv6
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?
HTTP at the application layer
HTML at the application layer
IP at the internet layer
UDP at the internet layer
TCP at the transport layer
IP at the internet layer
Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)
File Transfer
Address Resolution
Routing Protocols
Messaging
Ethernet
Internet Protocol
- Routing Protocols
- Internet Protocol
- Messaging
True or false. Standards organizations are usually vendor-neutral.
True
False
True
This standards organization is responsible for IP address allocation and domain name management.
Internet Society (ISOC)
Internet Engineering Task Force (IETF)
Internet Architecture Board (IAB)
Internet Assigned Numbers Authority (IANA)
Internet Assigned Numbers Authority (IANA)
What types of standards are developed by the Electronics Industries Alliance (EIA)?
electric wiring and connectors
radio equipment and cell towers
video compression and broadband communications
Voice over IP (VoIP) and satellite communications
electric wiring and connectors
This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.
Internet Society (ISOC)
Internet Engineering Task Force (IETF)
Internet Architecture Board (IAB)
Internet Research Task Force (IRTF)
Internet Engineering Task Force (IETF)
What is the process of dividing a large data stream into smaller pieces prior to transmission?
sequencing
duplexing
multiplexing
segmentation
segmentation
Which protocol stack layer encapsulates data into frames?
data link
transport
network
application
data link
What is the PDU associated with the transport layer?
segment
packet
bits
frame
segment
What is the name of the process of adding protocol information to data as it moves down the protocol stack?
de-encapsulation
sequencing
segmentation
encapsulation
encapsulation
True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway.
True
False
True
True or false? The right-most part of an IP address is used to identify the network that a device belongs to.
True
False
False
Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)
Data link layer addresses are logical and network layer addresses are physical.
Network layer addresses are expressed as 12 hexadecimal digits and data link layer addresses are decimal.
Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits.
Data link layer addresses are physical and network layer addresses are logical.
Network layer addresses are either 32 or 128 bits in length.
Data link layer addresses are 32 bits in length.
- Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits.
- Data link layer addresses are physical and network layer addresses are logical.
- Network layer addresses are either 32 or 128 bits in length.
What is used to determine the network portion of an IPv4 address?
subnet mask
MAC address
right-most part of the IP address
left-most part of the MAC address
subnet mask
What is the order of the two addresses in the data link frame?
source MAC, destination MAC
destination MAC, source IP
destination IP, source IP
destination MAC, source MAC
source IP, destination IP
destination MAC, source MAC
True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.
True
False
False
What process is used to receive transmitted data and convert it into a readable message?
access control
decoding
encapsulation
flow control
decoding
What is done to an IP packet before it is transmitted over the physical medium?
It is tagged with information guaranteeing reliable delivery.
It is segmented into smaller individual pieces.
It is encapsulated into a TCP segment.
It is encapsulated in a Layer 2 frame.
It is encapsulated in a Layer 2 frame.
What process is used to place one message inside another message for transfer from the source to the destination?
access control
decoding
encapsulation
flow control
encapsulation
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, IP, TCP, Ethernet
HTTP, TCP, IP, Ethernet
Ethernet, TCP, IP, HTTP
Ethernet, IP, TCP, HTTP
HTTP, TCP, IP, Ethernet
What are two benefits of using a layered network model? (Choose two.)
It assists in protocol design.
It speeds up packet delivery.
It prevents designers from creating their own model.
It prevents technology in one layer from affecting other layers.
It ensures a device at one layer can function at the next higher layer.
- It assists in protocol design.
- It prevents technology in one layer from affecting other layers.
What is the purpose of protocols in data communications?
specifying the bandwidth of the channel or medium for each type of communication
specifying the device operating systems that will support the communication
providing the rules required for a specific type of communication to occur
dictating the content of the message sent during communication
providing the rules required for a specific type of communication to occur
Which logical address is used for delivery of data to a remote network?
destination MAC address
destination IP address
destination port number
source MAC address
source IP address
destination IP address
What is the general term that is used to describe a piece of data at any layer of a networking model?
frame
packet
protocol data unit
segment
protocol data unit
Which two protocols function at the internet layer? (Choose two.)
POP
BOOTP
ICMP
IP
PPP
- ICMP
- IP
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?
application
presentation
session
transport
network
transport
Which type of communication will send a message to a group of host destinations simultaneously?
broadcast
multicast
unicast
anycast
multicast
Which three acronyms/initialisms represent standards organizations? (Choose three.)
IANA
TCP/IP
IEEE
IETF
OSI
MAC
- IANA
- IEEE
- IETF
What type of communication will send a message to all devices on a local area network?
broadcast
multicast
unicast
allcast
broadcast
In computer communication, what is the purpose of message encoding?
to convert information to the appropriate form for transmission
to interpret information
to break large messages into smaller frames
negotiate correct timing for successful communication
to convert information to the appropriate form for transmission
Which message delivery option is used when all devices need to receive the same message simultaneously?
duplex
unicast
multicast
broadcast
broadcast
What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)
connector specifications
message encoding
media selection
message size
delivery options
end-device installation
- message size
- message encoding
- delivery options
What type of delivery uses data link layer addresses?
remote delivery
local and remote delivery
local delivery
remote delivery using routers
local delivery
What layer of the TCP/IP protocol model determines the best path through the network?
application
transport
internet
network access
internet