Mod 6-9 Study Set
The goal of a wide area network is to allow as many computers as possible to send packets simultaneously. TRUE OR FALSE
TRUE
Default routing is optional; a default entry is present only when there is one destination available for a packet to transverse the network. TRUE OR FALSE
FALSE
Each hexadecimal character represents 8 bits in binary. TRUE OR FALSE
FALSE
Increasing the length of the transmission medium is necessary in order to send signals across greater distances on a LAN. TRUE OR FALSE
FALSE
Local area networks span a major city or metropolitan. TRUE OR FALSE
FALSE
Media Access Control (MAC) Addresses are assigned by IEEE to individual Network Interface Controller (NIC) devices. TRUE OR FALSE
FALSE
Packet switching is typically associated with telephone technology. TRUE OR FALSE
FALSE
Static routing allows automatically updates when there are major route changes. TRUE OR FALSE
FALSE
The fundamental paradigm used to achieve simultaneous transmission of packets across a network is known as queue and process. TRUE OR FALSE
FALSE
The next-hop forwarding depends on the packet's original source and the path the packet has taken before it arrives at a particular packet switch. TRUE OR FALSE
FALSE
The two basic approaches to construct a forwarding table in a router are called static routing and default routing. TRUE OR FALSE
FALSE
What is the purpose of a bridge?
TO CONNECT 2 LAN SEGMENTS
A Media Access Control address is divided into a 3-byte organizational unique ID and a 3-byte block that identifies a particular network interface card (NIC). TRUE OR FALSE
TRUE
A Virtual Local Area Network (VLAN) switch allows a manager to configure a switch to emulate multiple, independent switches. TRUE OR FALSE
TRUE
A layer 2 switch is an electronic device that resembles a hub but simulates a bridged network that has only one computer per LAN segment. TRUE OR FALSE
TRUE
A maximum length specification of the local area network is a fundamental part of LAN technology because hardware is engineered to emit a fixed amount of energy. TRUE OR FALSE
TRUE
A packet switch does not need to keep complete information about how to reach all possible computers; it only needs to know which outgoing link to use to reach a given switch. TRUE OR FALSE
TRUE
A third generation of Ethernet wiring made a dramatic shift by using an electronic device separate from the computers attached to the network and replacing the heavy, shielded cabling with twisted pair. TRUE OR FALSE
TRUE
Circuit switching refers to a communications mechanism that establishes a path between sender and receiver with guaranteed isolation from paths used by other pairs of senders and receivers. TRUE OR FALSE
TRUE
In dynamic routing, a program builds an initial forwarding table when a packet switch boots; the program then alters the table as conditions in the network change. TRUE OR FALSE
TRUE
Local Area Network (LAN) technologies were invented after the invention of Wide Area Network (WAN) technologies. TRUE OR FALSE
TRUE
Packet switching forms the basis for the Internet. TRUE OR FALSE
TRUE
Spread spectrum techniques can help wireless LANs function in noisy environments. TRUE OR FALSE
TRUE
Spread spectrum transmission use multiple frequencies to send data. TRUE OR FALSE
TRUE
The expense of packet switching technologies depend on the distances they span. TRUE OR FALSE
TRUE
The purpose of fiber modem extensions is to accept packets over the Ethernet interface and send over optical fiber and accept packets off the optical fiber and send them over the Ethernet interface. TRUE OR FALSE
TRUE
Wireless technologies can be classified broadly according to network types, such as Local Area Networks (LAN), Metropolitan Area Networks (MAN), Wide Area Networks (WAN), and Personal Area Networks (PAN). TRUE OR FALSE
TRUE
A repeater is an analog device used to broadcast messages across a Wide Area Network (WAN). TRUE OR FALSE
FALSE
The purpose of a repeater is to __________________ . a. broadcast messages b. join two LAN segments c. amplify a signal d. direct packet flow
AMPLIFY
1. Bridges do not blindly forward a copy of each frame from one LAN to another. Instead, bridges a. run in promiscuous mode and broadcasts frames to neighboring LAN segment. b. use the destination MAC address and do not forward the frame to a LAN segment unless necessary. c. use the destination MAC address to ensure a frame is not returned to the same LAN segment. d. accept only frames that are destined for a LAN segment outside the local LAN.
B
Bridges do not blindly forward a copy of each frame from one LAN to another. Instead, bridges a. run in promiscuous mode and broadcasts frames to neighboring LAN segment. b. use the destination MAC address and do not forward the frame to a LAN segment unless necessary. c. use the destination MAC address to ensure a frame is not returned to the same LAN segment.
B
What THREE general properties define a circuit switched paradigm? a. No set-up required before communication begins b. Performance equivalent to an isolated physical path c. Separate steps for circuit creation, use, and termination d. Performance varies due to statistical multiplexing among packets e. Point-to-Point communication f. Arbitrary, asynchronous communication
B, C, & E
The purpose of ___________ is for communication over a short distance between a small peripheral device such as a headset or mouse and a system such as a cell phone or a computer.
BLUETOOTH
A mechanism used to connect two LAN segments and forward frames from one segment to another is called a
BRIDGE
A mechanism used to connect two LAN segments and forward frames from one segment to another is called a _______________ . a. repeater b. frame c. bridge d. gateway
BRIDGE
Communication between two parties on a circuit switched network is affected by communication between other parties sharing a common medium. TRUE OR FALSE
FALSE
ISM is an acronym that stands for a. Inventory, Security, and Manufacturing groups. b. Inventors, Scientists, and Musical groups. c. Industrial, Scientific, and Medical groups. d. Internet, Services, and Middleware groups.
C
The purpose of a Distributed Spanning Tree (DST) is to a. include additional LAN segments on a network. b. increase distances a message can be forwarded. c. prevent broadcast messages from flowing in an endless loop. d. associate a wireless host with an access point.
C
What is the purpose of a bridge? a. It connects two LAN segments. b. It connects two WAN segments. c. It amplifies a signal across a LAN. d. It broadcasts messages on WAN segments.
CONNECT 2 LAN SEGS
A license is required to operate transmission equipment is all ranges of the electromagnetic spectrum. TRUE OR FALSE
FALSE
The electronic device that served as the central interconnection was known as _____________ and used CSMA/CD to detect and avoid collisions.
HUB
___________ is used for line-of-sight communication between a small device, often a hand-held controller, and a nearby system such as a compute or entertainment center.
INFRARED
Communication using frequencies set aside for environments where electromagnetic interference may be present uses _________ wireless technologies.
ISM
type of routing protocol requires the packet switches to send messages periodically across the network carrying the status of a link between the two packet switches -
LINK-STATE ROUTING
The IEEE 802.15 standard applies to wireless _______ communication.
PAN
What is the purpose of a repeater?
To amplify a signal
________ is used for communication over distances about as large as a residence, which allows electrical appliances to connect to the Smart Grid.
ZIGBEE
