Cisco Networking Chapter 3

Protocol Suite

A protocol suite is a set of protocols that work together to provide comprehensive network communication services.

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

DNA (Domain Name System) and Dynamic Host Configuration Protocol (DHCP)

Which protocol stack layer encapsulates data into frames?

Data Link Transport Network

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

Encapsulation

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

Encoding Encapsulation Formatting

True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.

False

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

Flow Control Response Timeout Access Method

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

Formatting Encoding Encapsulation

HTTPS

HTTP Secure. A secure form of HTTP that encrypts the data that is exchanged over the World Wide Web.

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

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

IANA-Internet Assigned Numbers Authority IEEE-Institute of Electrical and Electronics Engineers IETF-Internet Engineering Task Force

Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)

ICMPv4 and ICMPv6

Which two protocols function at the internet layer?

IP ICMP

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

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

It assist in protocol design It prevents technology in one layer from affecting other layers

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

It is encapsulated in a Layer 2 frame

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

Multicast

Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)

Network layer addresses are logical and data link addresses are expressed with 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

Network Protocols

Network protocols define a common format and set of rules for exchanging messages between devices. Protocols are implemented by end devices and intermediary devices in software, hardware, or both. Each network protocol has its own function, format, and rules for communications.

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

Protocols are used for the automatic detection of devices or services. Examples of service discovery protocols include Dynamic Host Configuration Protocol (DHCP) which discovers services for IP address allocation, and Domain Name System (DNS) which is used to perform name-to-IP address translation.

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 Protocol- enable routers to exchange route information, compare path information, and then to select the best path to the destination network. Examples of routing protocols include Open Shortest Path First (OSPF) and Border Gateway Protocol (BGP).

Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)

Routing Protocols, Messages and Internet Protocol

What is the protocol data unit(PDU) associated with the transport layer?

Segment Packet Frame

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

Sequencing Duplexing Multiplexing Segmentation

What is the name of the process of adding protocol information to data as it moves down the protocol stack?

Sequencing Segmentation Encapsulation

What is used to determine the network portion of an IPv4 address?

Subnet Mask

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

TCP IP HTTP

Transmission Control Protocol

TCP -This protocol manages the individual conversations. TCP is responsible for guaranteeing the reliable delivery of the information and managing flow control between the end devices.

The TCP/IP Protocol Model

TCP/IP Model LayerDescription 4 - Application-Represents data to the user, plus encoding and dialog control. 3 - Transport Supports communication between various devices across diverse networks. 2 - Internet Determines the best path through the network. 1 - Network AccessControls the hardware devices and media that make up the network.

Internet Protocol Suite or TCP/IP

The TCP/IP protocol suite is an open standard protocol suite maintained by the Internet Engineering Task Force (IETF) TCP/IP protocols are available for the application, transport, and internet layers.

Internet Protocol (IP)

The network protocol that deals with the routing of packets through interconnected networks to the final destination. IP is used by routers to forward the messages across multiple networks.

What is the purpose of the sequencing function in network communication?

This function uniquely labels each transmitted segment of data. The receiving device uses the sequencing information to reassemble the information correctly

Hypertext Transfer Protocol (HTTP)

This protocol governs the way a web server and a web client interact. HTTP defines the content formatting of the requests and responses that are exchanged between the client and server. Both the client and web server software implement HTTP as part of the application. HTTP relies on other protocols to govern how messages are transported between client and server.

Ethernet

This protocol is responsible for the delivery of messages from one NIC(network interface controller) to another NIC on the same ethernet local area network(LAN)

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

To convert information to the appropriate form for transmission

UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) belong to which layer of the TCP/IP protocol?

Transport

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 False

True or false? The right-most part of an IP address is used to identify the network that a device belongs to.

True False

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 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

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

http Ethernet ip DNA

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

protocol data unit PDU

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

transport