Telecom Exam 2

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______________ routing is most commonly used when the application data or message can fit into one single packet. a. Frame-oriented b. Connection-oriented c. Connectionless d. Physical-oriented e. Byte-oriented

Connectionless

When TCP/IP translates an application layer address into an IP address, it sends a special __________ to the nearest DNS server. -broadcast message -DNS request packet -SNA packet -IPX message -X.25 packet

DNS Request Packet

Server name resolution is done using the: a. Address Resolution Protocol b. Border Gateway Protocol c. Internet Control Message Protocol d. Routing Information Protocol e. Domain Name Service

Domain Name Service

A multicast message can be used to send a message to a maximum of two other computers

False

A routing protocol used inside an autonomous system is called an exterior routing protocol

False

Connectionless routing sets up a TCP connection, or virtual circuit between a sender and receiver.

False

Connections on a router, to the Internet and other routers for example, are called applications.

False

IP is responsible for error-free deliver of packets on a TCP/IP network T/F

False

IPv4 addresses offer unlimited opportunity for expansion and growth on the Internet

False

TCP/IP operates only as connection-oriented.

False

The latest version of IP is IPv7, which increases the address space from 128 bits to 256 bits.

False

The network layer address for IP is ten bytes long when using IPv4.

False

The source port identifier in the TCP header tells the TCP software on the destination computer, which application on the destination it should pass the packet to.

False

The standard port number for Telnet is 53

False

There are four fundamental approaches to routing: centralized, static routing, dynamic routing, and monitor routing.

False

When using dynamic routing, routing decisions are always made by a central host or server.

False

TCP is the network layer protocol used on the Internet today. T/F

False - This is IP

TCP/IP is a data link protocol that is used on the internet. T/F

False - it is a network layer protocol

The network layer sits directly between the application layer and the data link layer in the Internet five-layer model. T/F

False - it is between the data link and transport layers

The network layer is responsible for end-to-end delivery of the message. T/F

False - the transport layer does this

The transport layer routes messages through the network selecting the best path from the source to the destination station. T/F

False - this is the networking layer

UDP is not commonly used for: a. network management control messages b. RIP messages c. DHCP addressing messages d. HTTP requests e. routing control messages

HTTP Requests

__________ is not an important function of the transport layer. -end-to-end delivery of the message -taking messages from the application layer -routing -breaking long messages into smaller packets -interfacing with the network layer

Routing

TCP uses _____________ so that the destination station can reassemble the packets into the correct order. -IP addresses -sequence numbers -port numbers -packet numbers -reassembly value

Sequence numbers

___________ is the translation of application layer addresses into IP addresses. -Network interface card reversal -IPv6 -Server name resolution -Subnet masking -Name service coding

Server name resolution

The negotiation by the transport layer at the sender with the transport layer at the receiver to determine what size packets should be set up is done via establishing a(n) ___________ between the sender and receiver. a. network layer address resolution b. one way handshake c. SNA message d. TCP connection e. DNS server request

TCP Connection

_______ is the dominant network protocol today. -SDLC -SNA -IPX/SPX -TCP/IP -X.25

TCP/IP

The ____________ layer links the application layer with the network layer is responsible for end-to-end delivery of messages. -physical -transport -session -presentation -data link

Transport

A hop in a routing calculation is defined as one link or circuit.

True

An Address Resolution Protocol message is broadcast to all computers in a subnet to find the data link layer address.

True

An autonomous system is a network operated by one organization.

True

An example of an application layer address is www.indiana.edu

True

Because there is a limit on the length of a frame that the data link layer can transmit from node to node, the transport layer breaks up the message from the application layer into several smaller packets.

True

Domain Name Servers provide the equivalent of directory assistance for application layer addresses.

True

Enhanced Interior Gateway Routing Protocol is a dynamic link state interior routing protocol developed by Cisco

True

Part of the function of address resolution is translating the application layer address of the destination into a network layer address.

True

Quality of Service routing is a special type of connection-oriented routing in which different connections are assigned different priorities.

True

Routing is the process of determining the path or route through the network that a particular message will follow from the sender to the recipient.

True

Source port address is the logical address generated by the application layer on the source computer to identify the application, which is sending the data.

True

Subnet masks tell computers what part of an IP address is to be used to determine whether a destination is in the same subnet or in a different subnet

True

TCP includes a sequence number so that the packets can be reassembled at the destination in the correct order.

True

The TCP portion of TCP/IP performs linking to the application layer.

True

The data link layer address is generally encoded in a network card by the card's manufacturer

True

The most common standard for dynamic addressing for TCP/IP networks is Dynamic Host Control Protocol.

True

The transport layer process running on the destination computer, reassembles the fragmented application message before passing it up to the application layer. T/F

True

To help determine to which application a transmission should be delivered on a particular computer, TCP uses the application layer port addresses to distinguish among many open applications on a computer

True

Translating an application layer address to a network layer address and finally to a data link layer address is called address resolution.

True

Which of the following is not a protocol used at the application layer. a. HTTP b. SMTP c. FTP d. Telnet UDP

UDP

The transport layer must break messages from the application layer into several _____ that can be sent to the data link layer. a. bits b. bytes c. frames d. packets e. strings

packets

An application layer address using TCP/IPv4 looks like: -128.192.78.5 -www.cba.uga.edu [email protected] -00-0F-00-81-14-00 -Building 4, Room 2, User 3

www.cba.uga.edu

IPv6 is based upon _________ -byte addresses. -32 -24 -4 -16 -8

16

A typical TCP packet has a _______ header of control information. -32-bit -64-bit -160-bit -192-bit -32-byte

192-bit

The older version of IP has a ________ header of control information. -128-bit -192-bit -1024-bit -160-bit -320-bit

192-bit

A subnet mask of ___________ means that all computers with only the same first two bytes in their IPv4 addresses are on the same subnet. -11111111.0.0.0 -255.255.255.0 -255.0.0.0 -255.255.0.0 -255.255.255.255

255.255.0.0

IPv4 uses ________ bytes per Internet address. -4 -32 -8 -24 -16

4

Transmission Control Protocol/Internet Protocol was developed for ________ in 1974. -ARPANET -IBM -Hewlett-Packard -University of Minnesota -Xerox

ARPANET

The source destination port identifier tells the destination station _____________. -which computer sent the TCP packet. -which application layer program that the packet should be sent -which application layer process the packet is from. -the IP address of the source computer. -the IP address of the destination computer

Which application layer process the packet is from

ICANN: -developed the IPX/SPX network layer protocol -assigns data link layer addresses -approves which network layer addresses (usually, approved or assigned in groups or classes) can be used by an organization for its computers that will connect to the Internet -developed X.25 network layer protocol -refers to Interchange Computer Addressing Networks and Nodes

approves which network layer addresses (usually, approved or assigned in groups or classes) can be used by an organization for its computers that will connect to the Internet

Dynamic addressing: -assigns a permanent network layer address to a client computer in a network -makes network management more complicated in dial-up networks -has only one standard, bootp -is always performed for servers only -can solve many updating headaches for network managers who have large, growing, changing networks

can solve many updating headaches for network managers who have large, growing, changing networks

With QoS routing different __________ are defined, each with different priorities. -classes of service -domain names -application layer addresses -data link layer addresses -classes of Internet addresses

classes of service

A TCP connection is established in the ___________ routing method. -asynchronous -connection-oriented -frequency division -application net -connectionless

connection-oriented

_____________ routing is a method of routing in which each packet makes its own way through the network. -Frequency division -Connection-oriented -PCMCIA -Connectionless -Application net

connectionless

A client computer is assigned a data link layer address is by: -hardware manufacturers -software manufacturers -middleware manufacturers -network managers who configure a file in a computer's network layer software package -ISO

hardware manufacturers

The newer form of IP, version 6 (Ipv6): -Is running out of address space to support the growth of the Internet -has a 20 byte header -has an increased address size from 32 bits to 128 bits -does not include version number in its header -does not include hop limit in its header

has an increased address size from 32 bits to 128 bits

TCP/IP: -is the least commonly used network protocol for LANs because it cannot be combined with Ethernet -performs packetizing, as well as routing and addressing functions -is not very efficient and is prone to errors -is compatible with only one type of data link protocol, SDLC -refers to Telephone Control Procedures/Inter-exchange Procedures

performs packetizing, as well as routing and addressing function

IP: -performs packetizing functions -does not have a header -is currently in use with only one packet form or structure -performs routing functions -performs error control functions

performs routing functions

Assume that more than one application program is using the same communications line on a particular computer. To be able to decide to which application program a message should be delivered on this computer, TCP/IP relies on the: a. data link layer address b. port address c. application layer address d. network address e. IP address

port address

A(n) ________ refers to a group of computers that are logically grouped together by IP number. -IPv6 group -subnet -data link group -TCP group - application net

subnet


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