Chapter 3

Which step of the communication process is concerned with properly identifying the address of the sender and receiver?

Formatting******* Encoding Encapsulation

Which two protocols function at the internet layer? (Choose two.)

BOOTP POP ICMP PPP IP

Which two protocols are service discovery protocols? (Choose two.)

DNS******* TCP SSH DHCP*******

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

Which two protocols belong in the TCP/IP model application layer?

EIGRP DNS******* OSPF ICMP DHCP*******

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?

Ethernet, IP, TCP, HTTP HTTP, IP, TCP, Ethernet Ethernet, TCP, IP, HTTP HTTP, TCP, IP, 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 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*******

Which three are components of message timing? (Choose three.)

Flow Control******* Sequence Numbers Access Method******* Retransmit Time Response Time*******

What is the process of converting information into the proper form for transmission?

Formatting Encoding******** Encapsulation

Which protocol operates at the network access layer of the TCP/IP model?

HTTP IP DNS 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?

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

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*******

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)*******

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)

What is done to an IP packet before it is transmitted over the physical medium?

It is encapsulated into a TCP segment It is segmented into smaller individual pieces It is tagged with information guaranteeing reliable delivery It is encapsulated in a Layer 2 frame*******

What are two benefits of using a layered network model? (Choose two.)

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 speeds up packet delivery It prevents designers from creating their own model It assists in protocol design*******

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

OSI TCP/IP IETF******* MAC IANA******* IEEE*******

This protocol is responsible for guaranteeing the reliable delivery of information.

TCP******* IP HTTP Ethernet

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

Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?

Unicast Multicast******* Broadcast

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

allcast multicast broadcast******* unicast

UDP and TCP belong to which layer of the TCP/IP protocol?

application transport******* internet network access

Which protocol stack layer encapsulates data into frames?

data link******* transport network application

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*******

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

destination MAC address source IP address destination port number destination IP address******* source MAC address

What types of standards are developed by the Electronics Industries Alliance (EIA)?

electronic wiring and connectors******* radio equipment and cell towers video compression and broadband communications Voice over IP (VoIP) and satellite communications

What process is used to place one message inside another message for transfer from the source to the destination?

encapsulation******* access control decoding flow control

What process is used to receive transmitted data and convert it into a readable message?

flow control access control decoding******* encapsulation

Which type of communication will send a message to a group of host destinations simultaneously?

multicast******* unicast anycast broadcast

BGP and OSPF are examples of which type of protocol?

network communication network security routing******* service discovery

What is the purpose of protocols in data communications?

providing the rules required for a specific type of communication to occur******* dictating the content of the message sent during communication specifying the bandwidth of the channel or medium for each type of communication specifying the device operating systems that will support the communication

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

segment packet protocol data unit******* frame

What is the PDU associated with the transport layer?

segment******* packet bits frame

What is the process of dividing a large data stream into smaller pieces prior to transmission?

sequencing duplexing multiplexing segmentation*******

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

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

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

unicast duplex multicast broadcast*******

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

application transport******* network session presentation

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

In computer communication, what is the purpose of message encoding?

to negotiate correct timing for successful communication to convert information to the appropriate form for transmission******* to break down large messages into smaller frames to interpret information