TCP/IP Protocol Suite and IP Addressing Flashcards

Flashcards based on the TCP/IP Protocol Suite and IP Addressing lecture notes.

Who created TCP/IP?

US DoD

What is the TCP/IP model the standard on which it is based?

The Internet

What does the TCP/IP Application Layer handle?

High-level protocols, representation, encoding, and dialog control

What does Simple Network Management Protocol (SNMP) allow for?

Network managers to manage configurations, statistics, performance, and security

What is Domain Name System (DNS) used for?

Translate domain names into IP addresses

What is Trivial File Transfer Protocol (TFTP)?

Unreliable, connectionless UDP service used to transfer configuration files, Cisco IOS images, and to transfer files in a LAN

What is File Transfer Protocol (FTP)?

Reliable, connection-oriented service that uses TCP to transfer files between systems

What is Network File System (NFS)?

Allows file access to a remote storage device such as a hard disk

What is Simple Mail Transfer Protocol (SMTP)?

Administers the transmission of plain text e-mail over computer networks

What is Telnet?

Remotely access a computer, enabling a user to log into an Internet host and execute commands

What is a Telnet client called?

A local host

What is a Telnet server called?

A remote host

What is end-to-end control and reliability accomplished with as data travels through the cloud?

Sequence numbers, acknowledgments and sliding windows

What are the only Transport layer protocols?

TCP and UDP

What is Transmission Control Protocol (TCP)?

Connection-oriented protocol with end-to-end operation

What is User Datagram Protocol (UDP)?

Connectionless and unreliable protocol

What are the two purposes of the Internet Layer?

Determining the best path and packet-switching

What is Internet Protocol (IP)?

Connectionless, best-effort delivery routing of packets; determines best path to destination

What is Internet Control Message Protocol (ICMP) used for?

Control and messaging

What is Address Resolution Protocol (ARP) used for?

Determines the MAC address for a known IP address

What is Reverse Address Resolution Protocol (RARP) used for?

Determines the IP address for a known MAC address

What does the Network Access Layer allow?

Allows an IP packet to make a physical link to the network media

What does the Network Access Layer map?

Maps IP addresses to MAC addresses

What does the Network Access Layer encapsulate?

Encapsulates IP packets into frames

What protocols provide network access?

Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol (PPP)

What are the similarities between the TCP/IP and OSI models?

Both have layers, application, transport, and network layers, and use packet-switched technology

What are the differences between the TCP/IP and OSI models?

TCP/IP combines the OSI application, presentation, and session layers into its application layer

What principle is the Internet based on?

Network layer interconnection

What characteristics must Internetworking have?

Scalable, handle data across vast distances, flexible, cost-effective

What is the network address used for?

To identify the network itself

What is the broadcast address used for?

For broadcasting packets to all the devices on a network

What is the host bit value of a network address?

The host bits of a network address are all 0s

What is the host bit value of a broadcast address?

The host bits of a broadcast address are all 1s

What is an IP address?

A combination of the network address and the host address creating a unique address for each device on a network

Why is an IP address (logical, layer 3) important?

Needed to deliver the packet to the correct network

Why is a unique MAC address (physical, layer 2) important?

Needed to deliver it to the destination device once the packet has arrived at the network

What is the structure of an IP address?

A 32-bit sequence of ones and zeros, represented in dotted decimal format

Why does a router use the IP address of the destination network?

To deliver a packet to the correct network

What do the two parts of every IP address identify?

The network and the device

What are the five address classes?

Class A, Class B, Class C, Class D, and Class E

What is the purpose of the subnet mask?

Determines which part of an IP address is the network field and which part is the host field

What is the role of the Internet Assigned Numbers Authority (IANA)?

Ensure no two devices on the Internet have the same IP address

What allows a router to translate private addresses to public addresses?

Network Address Translation (NAT)

What does subnetting a network mean?

Divide up a network into smaller segments, or subnets

What associates a known MAC addresses with an IP addresses?

Reverse Address Resolution Protocol (RARP)

What allows a host to obtain an IP address dynamically without needing an individual profile for each device?

Dynamic Host Configuration Protocol (DHCP)

How are ARP tables maintained?

Automatically

How does a router send an ARP response in Proxy ARP?

With the MAC address of the interface on which the request was received

What does the source host compare to determine if the two IP addresses are located on the same segment?

Compares the destination IP address and its own IP address to determine if the two IP addresses are located on the same segment

What length are IPv6 addresses?

IPv6 addresses are 128 bits long

How can IP addresses be assigned?

Statically or dynamically