ITN 100 Exam 2

With ________ routing, computers or routers count the number of hops along a route and periodically exchange information on the hop count with their neighbors.

A. circuitous

B. decentralized

C. distance vector

D. indirect

E. link state

C. distance vector

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.

T/F

True

The ______ defines what type of packets should be routed and what types of packets should be discarded.

A. ACL

B. AFL

C. TCP

D. IOS

E. OSI

A. ACL

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.

T/F

False

The standard port number for Telnet is 53.

A. True

B. False

B. False

It is 23

Dynamic addressing:

A. assigns a permanent network layer address to a client computer in a network

B. makes network management more complicated in dial-up networks

C. has only one standard, bootp

D. is always performed for servers only

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

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

TCP uses _____________ so that the destination station can reassemble the packets into the correct order.

A. IP addresses

B. sequence numbers

C. port numbers

D. packet numbers

E. reassembly value

B. sequence numbers

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

A. True

B. False

A. True

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

A. True

B. False

A. True

_____________ routing is a method of routing in which each packet makes its own way through the network.

A. Frequency division

B. Connection-oriented

C. PCMCIA

D. Connectionless

E. Application net

D. Connectionless

The source destination port identifier tells the destination station _____________.

A. which computer sent the TCP packet

B. which application layer program that the packet should be sent

C. which application layer process the packet is from

D. the IP address of the source computer

E. the IP address of the destination computer

C. which application layer process the packet is from

___________ is the translation of application layer addresses into IP addresses.

A. Network interface card reversal

B. IPv6

C. Server name resolution

D. Subnet masking

E. Name service coding

C. Server name resolution

_______ is the dominant network protocol today.

A. SDLC

B. SNA

C. IPX/SPX

D. TCP/IP

E. X.25

D. TCP/IP

IPv4 uses ________ bytes per Internet address.

A. 4

B. 32

C. 8

D. 24

E. 16

A. 4

_________ created a service that allows organizations to transfer IPv4 addresses they don't need to another organization.

A. TCP/IP

B. ARPANET

C. ARIN

D. AIS

E. OSPF

C. ARIN

TCP/IP is a data link protocol that is used on the Internet.

A. True

B. False

B. False

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

A. True

B. False

A. True

___________ is the process of determining the path that a message will travel from sending computer to receiving computer.

A. Routing

B. Addressing

C. Interfacing

D. Broadcasting

E. Packetizing

A. Routing

When TCP/IP translates an application layer address into an IP address, it sends a special __________ to the nearest DNS server.

A. broadcast message

B. DNS request packet

C. SNA packet

D. IPX message

E. X.25 packet

B. DNS request packet

A logical bus topology:

A. is always used by token ring protocol LANs

B. has all computers connected to each other in point-to-point connections

C. is limited to short distances since devices like a hub or repeater cannot be used with this type of topology

D. permits every message to be received by every computer on the bus, even when those messages are intended for other computers

E. has a central control device, such as a mainframe

D. permits every message to be received by every computer on the bus, even when those messages are intended for other computers

The DCF function of Wi-Fi resolves the hidden node problem.

A. True

B. False

B. False

The maximum transmission speed of 802.11a LANs is 11 Mbps.

A. True

B. False

B. False

The _____ contains the servers that are designed to serve data to customers and suppliers.

A. e-commerce edge

B. SAN

C. LAN

D. domain controller

E. bottleneck

A. e-commerce edge

A switch uses a _____________ that is very similar to a routing table used in a router.

A. cable plan

B. forwarding table

C. network server

D. reversing table

E. switching mullion

B. forwarding table

__________ antennas project a signal in only one direction and are most often used on the inside of an exterior wall pointing to the inside of the building for security reasons.

A. Directional

B. Microware

C. Omnidirectional

D. Radio

E. Vertical

A. Directional

Wireless LANs use Carrier Sense Multiple Access with Collision Detection (CSMA/CD) for medic access control.

A. True

B. False

B. False

With _____________, the AP permits the owner to provide a list of valid addresses that can connect.

A. EAP.

B. SSID

C. WEP

D. MAC address filtering

E. SWEP

D. MAC address filtering

_________ is not a type of Ethernet specification.

A. 100Base-T

B. 10GbE

C. 1000Base-T (1GbE)

D. 10Base-T

E. Securenet

E. Securenet

Which of the following is not a potential bottleneck for LAN performance?

A. number and speed of hard disks in the server

B. amount of memory in the server

C. speed of server's CPU

D. network interface card

E. all of these answers are potential bottlenecks for LAN performance

E. all of these answers are potential bottlenecks for LAN performance

10/100 Ethernet:

A. uses 100 Mbps throughout the entire network

B. is not useful in the short run for organizations that are uncertain about which Ethernet standard to use

C. uses 10 Mbps throughout 100% of the entire network

D. provides traditional 10 Mbps Ethernet connections to client computers utilizing traditional 10Base-T, with 100 Mbps generally used to the server

E. uses 10 Gbps throughout 100% of the entire network

D. provides traditional 10 Mbps Ethernet connections to client computers utilizing traditional 10Base-T, with 100 Mbps generally used to the server

Wireless LANs use Carrier Sense Multiple Access with Collision Detection (CSMA/CD) for medic access control.

A. True

B. False

B. False

Hubs:

A. usually incorporate repeaters or amplifiers

B. have connection points called handles

C. limit the distance of a network to a few meters in length

D. are a difficult method to connect network cables

E. operate at the application layer

A. usually incorporate repeaters or amplifiers

The server version of the Network Operating System does not:

A. provide the software that performs the functions associated with the physical layer

B. provide the software that performs the functions associated with the data link layer

C. provide the software that performs the functions associated with the application layer

D. provide the software that performs the functions associated with the network layer

E. usually provide the software that performs the functions associated with the computer's own operating system

A. provide the software that performs the functions associated with the physical layer

The data link layer protocols used by wireless LANs are similar to the ones used on Ethernet LANs.

A. True

B. False

A. True

___________ is how the network works conceptually.

A. Physical topology

B. Logical topology

C. Network topology

D. Ethernet

E. Media access control

B. Logical topology

A collision on a bus circuit means that two computers on that circuit have transmitted at the same time.

A. True

B. False

A. True

Which of the following is not a type of hardware device that can be used to interconnect networks?

A. layer 3 switches

B. routers

C. dumb terminals

D. layer 2 switches

E. all of these can be used

C. dumb terminals

Circuit capacity on a backbone network will not be improved by:

A. going from 100Base-T Ethernet to 10Base-T Ethernet

B. going from 100Base-T Ethernet to gigabit Ethernet

C. adding additional circuits alongside heavily used ones

D. replacing a shared circuit backbone with a switched circuit backbone

E. providing a faster circuit to the server

A. going from 100Base-T Ethernet to 10Base-T Ethernet

Switches:

A. learn addresses by reading the source and destination addresses

B. operate at the physical layer only

C. connect two ore more network segments that use different data link protocols

D. connect two or more network segments that use different network protocols

E. have become more popular than layer 2 switches

A. learn addresses by reading the source and destination addresses

A room that contains a rack of equipment for a rack-based collapsed backbone is also called the main distribution facility (MDF) or central distribution facility (CDF).

A. True

B. False

A. True

Which of the following is true regarding switched backbones?

A. They place all network devices for one part of the building physically in the same room, often in a rack of equipment

B. They have an advantage of requiring less cable

C. They make it more difficult to move computers from one LAN to another

D. Network capacity is always tied to the physical location of the computers

E. They are harder to maintain and upgrade than a BN that is not rack-based

A. They place all network devices for one part of the building physically in the same room, often in a rack of equipment

Which of the following is not true about multiswitch VLANs?

A. Several switches are used to build a VLAN.

B. The switches in the VLAN can send packets among themselves in a way that identifies the VLAN to which the packet belongs.

C. In some multi-switch VLANs, the Ethernet packet is modified based on the emerging IEEE 802.1q standard.

D. In some multi-switch VLANs, a new VLAN packet encapsulates the Ethernet packet.

E. All of these are true statements.

E. All of these are true statements.

The backbone architecture layer that is closest to the users is the

A. Access layer

B. Distribution layer

C. Core layer

D. Privacy layer

E. Switched layer

A. Access layer

A _____________ type of BN is a new type of LAN/BN architecture made possible by intelligent, high speed switches that assign computers to LAN segments via software, rather than by hardware.

A. Bridged backbone

B. Virtual LAN

C. Hubbed backbone

D. Collapsed backbone

E. Routed backbone

B. Virtual LAN

Switches and routers are devices that can connect networks to the BN.

A. True

B. False

A. True

Layer-3 switches switch messages based on their data link layer address.

A. True

B. False

B. False

Switched backbone networks:

A. always use a ring topology

B. are the least common type of BN used in one building

C. use a star topology with one device, usually a switch

D. have a great deal of cable in their backbones

E. tend to have less cable, but more network devices

C. use a star topology with one device, usually a switch

Routers use network layer address to forward packets between network segments.

A. True

B. False

A. True

Which of the following would be least effective in improving backbone performance?

A. improving the computers in the network

B. changing the demand placed on the network

C. adding new keyboards to the client computers

D. upgrading the circuits between computers

E. improving devices in the network

C. adding new keyboards to the client computers

Devices in a rack are connected together using ___________.

A. patch cables

B. string

C. servers

D. modules

E. chassis switches

A. patch cables

Backbone networks typically use lower speed circuits to interconnect a series of LANs and provide connections to other backbone networks.

A. True

B. False

B. False

A VLAN requires the computer manager to reconfigure the physical cables to the switch if a computer is moved from one port to another port on a switch.

A. True

B. False

B. False

Routers connect two or more network segments that use the same or different data link protocols, but the same network protocol.

A. True

B. False

A. True

Routers:

A. require more management than switches

B. are not susceptible to time delays

C. use data link layer addresses to move packets that leave the subnet

D. require only a few set of TCP/IP addresses

E. don't need much time to establish separate subnet addresses for each LAN

A. require more management than switches

Which of the following is not a way that a router differs from a switch?

A. routers can connect two or more networks that use the same data link protocol

B. routers only process messages that are specifically addressed to it

C. routers operate at the network layer

D. routers perform more processing on each message than switch

E. routers can choose the "best" route between networks for forwarding a packet

A. routers can connect two or more networks that use the same data link protocol

WANs can connect BNs across distances that can span up to thousands of miles.

A. True

B. False

A. True

Ethernet/IP packet networks are not provided by common carriers such as AT&T.

A. True

B. False

A. True

______________ are sometimes called private line services.

A. WANs

B. LANs

C. Circuit-switched networks

D. Dedicated-circuit networks

E. Routed-backbone networks

D. Dedicated-circuit networks

Primary rate interface:

A. is typically offered only to commercial customers

B. provides a communications circuit with two 64 Kbps B channels, plus one D channel

C. is defined exactly the same way in Europe

D. has an upper capacity of 128 Kbps

E. is comprised of analog circuits only

A. is typically offered only to commercial customers

MPLS operate at layer 4.

A. True

B. False

B. False

The performance of WANs can be improved by:

A. upgrading the circuits between the computers

B. increasing the demand placed on the network

C. downgrading the circuits between the computers

D. downgrading the devices that provide access to the circuits

E. increasing network traffic

A. upgrading the circuits between the computers

Datagrams are connection-oriented.

A. True

B. False

B. False

Full mesh design networks are more common than partial mesh design networks.

A. True

B. False

B. False

OC-3072 has a data rate of

A. 159.25 Gbps

B. 39.813 Gbps

C. 1.544 Mbps

D. 100 Mbps

E. 1.244 Gbps

A. 159.25 Gbps

SONET is made up of very high speed dedicated circuits that incorporate inverse multiplexing (IMUX) for all levels above the OC-1 level.

A. True

B. False

A. True

The _________________ is a Canadian government agency that regulates voice and data communication.

A. PSTN

B. FCC

C. CRTC

D. CSU

E. POTS

C. CRTC

In a ring design WAN,

A. messages can take a long time to travel from the sender to the receiver

B. a message arrives at all computers on the network simultaneously

C. messages always arrive faster than in other types of layouts

D. messages are delivered directly from sender to receiver because there is a point-to-point connection directly between each sender and each receiver

E. messages always take one second to travel between sender and receiver

A. messages can take a long time to travel from the sender to the receiver

Which of the following is not a basic architecture for dedicated circuit networks?

A. ring

B. partial mesh

C. bus

D. star

E. full mesh

C. bus

A disadvantage of a star architecture is that the failure of one circuit will disrupt the entire network.

A. True

B. False

B. False

In a packet switched network, permanent virtual circuits that look very similar to a _____________ (for hardware-based dedicated circuits) move packets through the network.

A. cloud-based ring design

B. cloak-based mesh design

C. cloud-based mesh design

D. common carrier ring design

E. common carrier bus design

C. cloud-based mesh design

A ________ geometric layout connects all computers in a closed loop, with each computer linked to the next usually with a series of point-to-point dedicated circuits.

A. bus design

B. star design

C. full mesh design

D. ring design

E. partial mesh design

D. ring design

Common carriers sell or lease communication services and facilities to the public.

A. True

B. False

A. True

With a virtual private network, users create permanent virtual circuits through the Internet called:

A. bursts

B. cells

C. tunnels

D. rings

E. clouds

C. tunnels