Networking Final

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Which statement describes an advantage of networks?

Networks enable multiple users to share resources.

A ____ facilitates communication and resource sharing between other computers on the network.

server

____ networks are the most popular type of network for medium- and large-scale organizations.

Client/server

A ____ network is confined to a relatively small space.

LAN

A ____ network connects clients and servers from multiple buildings.

MAN

A ____ is a specialized device that allows multiple networks or multiple parts of one network to connect and exchange data.

connectivity device

____ are the distinct units of data that are exchanged between nodes on a network.

Data Packets

____ services refer to the capability of a server to share data files, applications, and disk storage space.

File

____ services allow remote users to connect to the network.

Access

____ provide a Web-based client for checking e-mail.

Mail Servers

Security auditing is handled by ____.

management services

Standards define the ____ performance of a product or service.

minimum acceptable

The goal of ____ is to establish international technological standards to facilitate the global exchange of information and barrier free trade.

ISO

The ____ is a specialized United Nations agency that provides developing countries with technical expertise and equipment to advance those nations' technological bases.

ITU

____ oversees the IAB (Internet Architecture Board).

ISOC

Which statement accurately describes the OSI model?

It describes a theoretical representation of what happens between two nodes communicating on a network

Which OSI model layer initiates the flow of information?

Application

In which OSI model layer does TCP operate?

Transport

Which type of protocol is useful when data must be transferred quickly?

connectionless

Transport layer protocols break large data units into ____.

segments

Each network node has ____ types of addresses.

two

The process of determining the best path from Point A on one network to Point B on another is known as ____.

routing

In which OSI model layer does IP operate?

Network

Which Data Link sublayer manages flow control?

LLC

Which Data Link sublayer manages access to the physical medium?

MAC

The ____ is a fixed number associated with a device's NIC.

physical address

In which OSI model layer do hubs operate?

Physical

In which OSI model layer(s) do NICs operate?

Physical and Data Link

Which IEEE standard describes Ethernet?

802.3

Which IEEE standard describes specifications for wireless transmissions?

802.11

____________________ are documented agreements containing technical specifications or other precise criteria that stipulate how a particular product or service should be designed or performed.

Standards

____________________ protocols establish a connection with another node before they begin transmitting data.

Connection Oriented

The distance between corresponding points on a wave's cycle is called its ____.

wavelength

A digital signal composed of a pulse of positive voltage represents a ____.

1

The byte 00001110 means ____ on a digital network.

14

In modulation, a simple wave called a ____ wave, is combined with another analog signal to produce a unique signal that gets transmitted from one node to another.

carrier

When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.

full-duplex

____ is a technology used with fiber-optic cable, which enables one fiber-optic connection to carry multiple light signals simultaneously.

WDM (wavelength division multiplexing)

The data transmission characteristic most frequently discussed and analyzed by networking professionals is ____.

throughput

One of the most common transmission flaws affecting data signals is ____.

noise

The most significant factor in choosing a transmission method is its ____.

throughput

The more twists per foot in a pair of wires, the more resistant the pair will be to ____.

cross talk

Modern LANs use ____ or higher wiring.

Cat 5

Serial refers to a style of data transmission in which the pulses that represent bits follow one another along a ____ transmission line.

single

____ describes a popular serial data transmission method.

EIA/TIA RS-232 (Recommended Standard 232)

Which connector is used in RS-232 transmissions?

DB-25

In a ____ cable, the usual wire positions are exactly reversed in one of the two RJ-45 terminations.

rollover

Which term describes the hardware that makes up the enterprise-wide cabling system?

cable plant

Which standard is also known as structured cabling?

TIA/EIA Commercial Building Wiring Standard

The points where circuits interconnect with other circuits is known as ____.

cross-connect facilities

Which term identifies a room containing connectivity for groups of workstations in its area?

telecommunications closet

____ describes wiring that connects workstations to the closest telecommunications closet.

Horizontal wiring

Many network problems can be traced to poor cable ____ techniques.

installation

The use of 1s and 0s to represent information is characteristic of a(n) ____________________ system.

binary

____________________ is a term used by networking professionals to describe the nondata information that must accompany data for a signal to be properly routed and interpreted by the network.

Overhead

ICMP (Internet Control Message Protocol) reports on the success or failure of data delivery.

Point-to-multipoint

If a device does not know its own IP address, it can still use ARP.

Connectors

TCP is a(n) ____ subprotocol.

connection-oriented

A(n) ____ number is the address on a host where an application makes itself available to incoming or outgoing data.

port

____ is more efficient than TCP for carrying messages that fit within one data packet.

UDP

A UDP header contains ____ fields.

four

The subprotocol that enables TCP/IP to internetwork - that is, to traverse more than one LAN segment and more than one type of network through a router is ____.

IP

____ operates at the Network layer and manages multicasting.

IGMP

In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing.

IP

In IPv4 addressing, each IP address is a unique ____ number.

32-bit

In IPv4 addressing, an IP address whose first octet is in the range of 192-223 belongs to a Class ____ network.

C

In IPv4 addressing, a node with an IP address of 168.34.88.29 belongs to a Class ____ network.

B

In dotted decimal notation, a(n) ____ separates each decimal.

period

The default subnet mask for a Class B network is ____.

255.255.0.0

In most cases, BOOTP has been surpassed by the more sophisticated IP addressing utility, ____.

DHCP

A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission.

anycast

In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is.

Format Prefix

If the standard port number for the Telnet service is 23, a host whose IPv4 address is 10.43.3.87 has a socket address for Telnet of ____.

10.43.3.87:23

In the domain name www.google.com, ____ is the top-level domain (TLD).

com

____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite.

Telnet

____ is a simple Application layer protocol used to synchronize the clocks of computers on a network.

NTP

____ is a utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network.

PING

Protocols that can span more than one LAN (or LAN segment) are ____________________, because they carry Network layer addressing information that can be interpreted by a router.

routable

A physical topology ____.

depicts a network in broad scope

Without ____, a bus network would suffer from signal bounce.

terminators

In a ring network, each workstation acts as a(n) ____ for the transmission.

repeater

A complex combination of pure topologies is known as a ____ topology.

hybrid

The most common logical topologies are ____ and ring.

bus

A ____ is simply a linked series of devices.

daisy-chain

In packet switching, when packets reach their destination node, the node ____ them based on their control information.

reassembles

Collectively, MPLS labels are sometimes called a ____.

shim

All Ethernet networks, independent of their speed or frame type, use an access method called ____.

CSMA/CD

A ____ occurs when two transmissions interfere with each other.

collision

On an Ethernet network, a(n) ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.

collision domain

1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable.

10

The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.

twisted pair

The most common 1-Gigabit Ethernet standard in use today is ____.

1000Base-LX

The 10-gigabit fiber optic standard with the shortest segment length is ____.

10GBase-SR

In the 10GBase-LR standard, the L stands for ____.

long reach

Given their long-distance capabilities, 10GBase-ER and 10GBase-EW are best suited for use on ____.

WANs

Within Ethernet frame types, the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.

preamble

The data portion of an Ethernet frame may contain ____ bytes of information.

46 to 1500

The Ethernet_II frame type contains a 2-byte ____ field which differentiates it from the older Ethernet_802.3 and Ethernet_802.2 frame types.

type

In a(n) ____________________ topology, every node on the network is connected through a central device, such as a hub, router, or switch.

star

A network backbone is the ____________________ that connects the hubs, switches, and routers on a network.

cabling

____________________ is a component of a network's logical topology that determines how connections are created between nodes.

Switching

As part of CSMA/CD, a process known as ____________________ allows the NIC issue a special 32-bit sequence that indicates to the rest of the network nodes that its previous transmission was faulty and that those data frames are invalid.

jamming

Nearly all NICs contain a(n) ____, the device that transmits and receives data signals.

data transceiver

By far, the most popular expansion board NIC is one that uses a(n) ____ bus.

PCI

PCIe slots vary depending on the number of ____ they support.

lanes

CompactFlash is an example of a peripheral device attached to the computer's ____ bus.

external

The primary difference between the two USB standards is ____.

speed

____ is a set of data or instructions that has been saved to a ROM (read-only memory) chip (which is on the NIC).

Firmware

Each time a computer starts up, the device drivers for all its connected peripherals are loaded into ____.

RAM

If the ____ NIC LED indicator is blinking, the NIC is functioning and receiving frames.

RX

A(n) ____ is the circuit board wire over which a device issues voltage to signal this request.

interrupt

____ is a type of microchip that requires very little energy to operate.

CMOS

The ____ is a simple set of instructions that enables a computer to initially recognize its hardware.

BIOS

The ____ setting specifies, in hexadecimal notation, which area of memory will act as a channel for moving data between the NIC and the CPU.

base I/O port

A NIC's transmission characteristics are held in the adapter's ____.

firmware

A ____ is a repeater with more than one output port.

hub

____ hubs possess internal processing capabilities.

Intelligent

Switches can create ____ by grouping a number of ports into a broadcast domain.

VLANs

To eliminate the possibility of a broadcast storm, switches and bridges implement the ____.

STP (Spanning Tree Protocol)

Switches that operate anywhere between Layer 4 and Layer 7 are also known as ____ switches.

content

A ____ is a multiport connectivity device that directs data between nodes on a network.

router

____ routing is a technique in which a network administrator programs a router to use specific paths between nodes.

Static

____ are combinations of networking hardware and software that connect two dissimilar kinds of networks.

Gateways

A computer's ____________________ is the circuit, or signaling pathway, used by the motherboard to transmit data to the computer's components, including its memory, processor, hard disk, and NIC.

bus

A(n) ____________________ NIC is integrated into the motherboard.

on-board

A(n) ____________________ is software that enables an attached device to communicate with the computer's operating system.

device driver

WANs typically send data over ____ available communications networks.

publicly

The individual geographic locations connected by a WAN are known as ____.

WAN sites

Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.

nonroutable

On most modern WANs, a ring topology relies on ____ rings to carry data.

redundant

The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.

local loop

A PSTN offers ____ security.

marginal

____ is an updated, digital version of X.25 that also relies on packet switching.

Frame relay

In a process called ____, two 64-Kbps ISDN B channels can be combined to achieve an effective throughput of 128 Kbps.

bonding

A ____ converts digital signals into analog signals for use with ISDN phones and other analog devices.

terminal adapter

ISDN PRI uses ____ B channels and one 64-Kbps D channel.

23

The speed of a T-carrier depends on its ____ level.

signal

At the customer's demarcation point, either inside or outside the building, T-carrier wire pairs terminate with a ____.

smart jack

A ____ aggregates multiple DSL subscriber lines and connects them to the carrier's CO.

DSLAM

Broadband cable requires many subscribers to share the same local line, thus raising concerns about ____ and actual (versus theoretical) throughput.

security

What sets ATM apart from Ethernet is its ____ size.

fixed packet

SONET's extraordinary ____ results from its use of a double-ring topology over fiber-optic cable.

fault tolerance

The data rate of a particular SONET ring is indicated by its ____, a rating that is internationally recognized by networking professionals and standards organizations.

OC (Optical Carrier) level

____ networking refers to dialing directly into a private network's or ISP's remote access server to log on to a network.

Dial-up

____ is the preferred communications protocol for remote access communications.

PPP

____ is the standard for connecting home computers to an ISP via DSL or broadband cable.

PPoE

____ virtual computing allows a user on one computer, called the client, to control another computer, called the host or server, across a network connection.

Remote

In wireless communication, to exchange information, two antennas must be tuned to the same ____.

frequency

A directional antenna issues wireless signals along a(n) ____ direction.

single

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