Telecom Exam 2
______________ 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
