Modules 6-9 UC Networking
Convert 0x1FC7 to binary
0001 1111 1100 0111
Convert 0x81A to binary
1000 0001 1010
A designation of 100BaseT has a data rate of ____________.
100Mbps
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
Convert binary 1100 1001 0110 0001 to hexadecimal.
C961
Select thee of the functions of a network interface card (NIC).
CRC computation, frame recognition, and address recognition
Which fields are contained in the Ethernet frame header?
Destination Address Source Address Type Field
A form of packet routing that sends a complete list of destinations and the current cost of reaching each is called
Distance Vector Routing.
A repeater is an analog device used to broadcast messages across a Wide Area Network (WAN).
False
A router is used to connect two Wide Area Networks (WAN) provided that both networks use the same technology and protocols.
False
Communication between two parties on a circuit switched network is affected by communication between other parties sharing a common medium
False
Default routing is optional; a default entry is present only when there is one destination available for a packet to transverse the network.
False
Each hexadecimal character represents 8 bits in binary.
False
Increasing the length of the transmission medium is necessary in order to send signals across greater distances on a LAN.
False
Local area networks spans a major city or metropolitan.
False
Media Access Control (MAC) Addresses are assigned by IEEE to individual Network Interface Controller (NIC) devices.
False
Packet switching is typically associated with telephone technology.
False
Second generation of Ethernet wiring used a thinner, coaxial cable that was more flexible than Thicknet and it used an Attachment Unit Interface (AUI) to interconnect computers.
False
Static routing allows automatically updates when there are major route changes.
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.
False
We use the term intranet to refer to an internet that is owned by a private organization and designed for global use.
False
Name the two conceptual parts of each frame.
Header, Payload
Communication using frequencies set aside for environments where electromagnetic interference may be present uses _________ wireless technologies.
ISM
___________ 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
What is the purpose of a bridge?
It connects two LAN segments.
How is the type field in the Ethernet header used?
It provides multiplexing/demultiplexing allowing multiple protocols to operate simultaneously.
Which 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
What three general properties define a packet switched paradigm?
No set-up required before communication begins, Performance varies due to statistical multiplexing among packets, Arbitrary, asynchronous communication
For a WAN to operate correctly, each switch must have a forwarding table, and must forward packets. Furthermore, values in the forwarding table must guarantee _______________ and ________________ .
Optimal Routes Universal Communication
What three general properties define a circuit switched paradigm?
Performance equivalent to an isolated path, Separate Steps for circuit creation, use, and Termination, Point-to-Point communication
Match the five layers of the TCP/IP model.
Physical, network interface, internet, transport, application
Very Small Aperture Satellite (VSAT) have made it possible to use satellites to provide Internet access to individuals or small businesses. Which of the following are true about VSAT?
Provides high data rates Dish size less than three meters Incurs long delays
Match the network topology with its description. computers connected in a closed loop computers have a direct connection between each pair computers connected by a single cable computers are all attached to a central point
Ring, Mesh, Bus, star
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.
The fundamental paradigm used to achieve simultaneous transmission of packets across a network is known as queue and process.
Which layer of the TCP/IP reference model specifies the messages and procedures that are used to ensure reliable transfer?
Transport
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
A Network Interface Card (NIC) is independent from the rest of the computer and a user can choose to replace the NIC without making other changes.
True
A Virtual Local Area Network (VLAN) switch allows a manager to configure a switch to emulate multiple, independent switches.
True
A communication system that allows arbitrary pairs of computers to communicate is called universal service.
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
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
An example of attenuation is the weaken of a radio signal as it travels over long distances.
True
Bluetooth is a short-distance wireless connection technology.
True
Crossover cables are used to connect switches to each other.
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
In order to make universal service possible across diverse networks, protocol software is required on both the computers and the routers used on the Internet.
True
Local Area Network (LAN) technologies were invented after the invention of Wide Area Network (WAN) technologies.
True
Packet switching forms the basis for the Internet.
True
Spread spectrum transmission use multiple frequencies to send data.
True
TCP/IP is the most important internetworking protocol suite and has been used on the Internet for decades.
True
The designation of the various types of Ethernet cabling, such as 1000BaseT, defines both the type of cable and the data rate.
True
The expense of packet switching technologies depend on the distances they span.
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
We use the term Internet, written with an uppercase I, to refer to the global Internet and the associated protocols.
True
An Ethernet cable with a designation of 100BaseT used which type of cable?
Twisted Pair
What is the purpose of byte stuffing?
Used to distinguish between data and control information.
_________ is used for communication over distances about as large as a residence, which allows electrical appliances to connect to the Smart Grid.
ZigBee
The electronic device that served as the central interconnection was known as _____________ and used CSMA/CD to detect and avoid collisions.
a hub
The three building blocks of a wireless LAN are the _________________ , ___________________, and ______________ .
access point, switch or router, and hosts
The purpose of a repeater is to
amplify a signal.
Which of the following is not true concerning the individual Media Access Control address assigned to each piece of Internet interface hardware?
assigned by IEEE
A mechanism used to connect two LAN segments and forward frames from one segment to another is called a
bridge
Wide Area Networks (WANs) use a hierarchical addressing scheme that is divided into two parts: ______________ and _______________ .
computer at the site site
Governments have reserved three areas of the electromagnetic spectrum for use by Industrial, Scientific, and Medical (ISM) groups using frequencies that require a license.
false
Routers, unlike other devices on a network, use all five layers of the TCP/IP reference model.
false
What is the term used to describe an end system that connects to the Internet and runs applications?
host
Define the three types of IEEE addresses that correspond to the three types of packet delivery.
identifies a subset of the computers on a given network, and specifies that each computer in the subset should receive a copy of the packet - multicast; uniquely identifies a single computer, and specifies that only the identified computer should receive a copy of the packet - unicast; corresponds to all computers, and specifies that each computer on the network should receive a copy of the packet - broadcast
Which layer of the TCP/IP reference model specifies the format of packets sent across the Internet?
internet
In a packet-switched network each frame corresponds to a packet. Match the term with its definition.
marks the beginning of a frame-SOH; contains information used to process the frame-Header; contains the message being sent-payload; marks the end of a frame-EOT
The IEEE 802.1Q standard allows
multiple VLAN switches to be interconnected and to operate like a giant VLAN switch.
The purpose of a Distributed Spanning Tree (DST) is to
prevent broadcast messages from flowing in an endless loop.
The basic hardware component used to connect heterogeneous (diverse) networks is a _________ .
router
Circuit switching provides
the illusion of an isolated physical path between a sender and a receiver
Bridges do not blindly forward a copy of each frame from one LAN to another. Instead, bridges
use the destination MAC address and do not forward the frame to a LAN segment unless necessary.