Test2 Prep Networking

To establish a satellite Internet connection, each subscriber must have a ____. - dish antenna - line-of-sight antenna - dish pathway - source pathway

dish antenna

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

driver

On a Linux workstation, a popular utility called ____________________ allows you to view and change NIC settings.

ethtool

In classful addressing, the Class B IPv4 address network ID is located in the ____. - last 8 bits - last 16 bits - first 8 bits - first 16 bits

first 16 bits

CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix. - dash ( - ) - underscore ( _ ) - backward slash ( \ ) - forward slash ( / )

forward slash ( / )

In wireless communication, to exchange information, two antennas must be tuned to the same ____. - frequency - variance - attenuation speed - port

frequency

The physical computer on a virtual machine is known as a ____. - guest - client - host - server

host

An administrator can discover the host name assigned to a client by using the ____ utility. - host - nbstat - hostname - nslookup

hostname

A hardware component that can be changed without disrupting operations is known as ____. - fast-synching - hot-synching - hot-swappable - fast-swappable

hot-swappable

At its most primitive, a ____ is a repeater with more than one output port. - base - hub - switch - bridge

hub

A complex combination of topologies is known as a ____ topology. -mixed - hybrid - compound - mulitpart

hybrid

If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit. - incorrect encryption - SSID mismatch - interference - incorrect antenna placement

interference

____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX. - ipconfig - iwconfig - config - ivconfig

iwconfig

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

PCIe slots vary depending on the number of ____ they support. - lanes - labels - cards - processors

lanes

In classful addressing, Class C IPv4 address host information is located in the ____. - last 8 bits - last 16 bits - first 8 bits - first 16 bits

last 8 bits

Clients are able to exchange signals with satellites as long as they have a ____ path. - view - line-of-sight - proprietary - directional

line-of-sight

In the 10GBase-LR standard, the L stands for ____. - long reach - LAN - long ring - little ring

long reach

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

nonroutable

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

preamble

WANs typically send data over ____ available communications networks. - privately - publicly - individually - serially

publicly

In packet switching, when packets reach their destination node, the node ____ them based on their control information. - disassembles - deletes - reassembles - separates

reassembles

A(n) ____________________ node in synchronous communications recognizes that it should be receiving data by looking at the time on the clock.

receiving

In a ring network, each workstation acts as a(n) ____ for the transmission. - repeater - amplifier - terminator - manager

repeater

Because the octets equal to 0 and 255 are ____, only the numbers 1 through 254 can be used for host information in an IPv4 address. - unobtainable - out-of-range - reserved - open for general use

reserved

The ____ utility allows you to view a host"s routing table. - nbstat - pathping - dig - route

route

A ____ is a multiport connectivity device that directs data between nodes on a network. - switch - bridge - router - gateway

router

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

security

Collectively, MPLS labels are sometimes called a ____. - header - shim - frame - title

shim

The speed of a T-carrier depends on its ____ level. - signal - hierarchy - channel - traffic

signal

A directional antenna issues wireless signals along a(n) ____ direction. - open - narrow - wide - single

single

A(n) ____________________ assesses client requirements, facility characteristics, and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.

site survey

At the customer"s demarcation point, either inside or outside the building, RJ-48 connectors terminate in a ____. - terminal adapter - smart jack - CSU/DSU - switch

smart jack

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

star

A ____ converts digital signals into analog signals for use with ISDN phones and other analog devices. - terminal adapter - DSLAM - smart jack - terminator

terminal adapter

Without ____, a bus network would suffer from signal bounce. - hubs - repeaters - terminators - jamming

terminators

The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium. - coaxial - twisted pair - fiber - atmosphere

twisted pair

The Ethernet II frame type contains a 2-byte ____ field that differentiates it from other Ethernet frame types. - data - length - source - type

type

Buses differ according to their ____. - connectors - resistance - capacity - speed

capacity

In ____ addressing, the network information portion of an IPv4 address is limited to the first 8 bits in a Class A address. - classful - subnet - stateful - limited

classful

A ____ occurs when two transmissions interfere with each other. - jam - collision - carrier sense - multiple access event

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 - crash domain - interference domain - duplicate domain

collision domain

Switches that operate anywhere between Layer 4 and Layer 7 are also known as ____ switches. - peripheral - STP - content - multiport

content

A ____ is simply a linked series of devices. - star - star-wired ring - ring - daisy-chain

daisy-chain

A physical topology ____. - pecifies device types - depicts a network in broad scope - specifies connectivity methods - specifies addressing schemes

depicts a network in broad scope

WiMAX is defined by the IEEE 802.11 standard.

False

____ is an updated, digital version of X.25 that also relies on packet switching. - DSL - ISDN - Frame relay - ATM

Frame relay

____ are combinations of networking hardware and software that connect two dissimilar kinds of networks. - Routers - Switches - Gateways - Broadcast domains

Gateways

____________________ means that satellites orbit the Earth at the same rate as the Earth turns.

Geosynchronous earth orbit

____ is a significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves. - Attenuation - Fading - Diffraction - Interference

Interference

Which satellites transmit and receive signals in the 12 to 18 GHz band? - L- - S- - Ku- - Ka-

Ku-

____________________ encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network.

LANE

In general, a steady or blinking green LED, sometimes labeled ____, indicates that the NIC is functional and has a connection to the network. - LNK - ACT - TX - RX

LNK

____ WANs are the most fault-tolerant type of WAN because they provide multiple routes for data to follow between any two points. -Bus - Star - Mesh - Tiered

Mesh

____ routing is a technique in which a network administrator programs a router to use specific paths between nodes. - Static - Dynamic - Best path - Link-state

Static

ATM is a WAN technology that functions in the Data Link layer.

True

Advances in NIC technology are making this hardware smarter than ever.

True

An ad hoc arrangement would not work well for a WLAN with many users.

True

Bridges are protocol independent.

True

Dial-up ISDN does not convert a computer"s digital signals to analog before transmitting them over the PSTN.

True

In CIDR, conventional network class distinctions do not exist.

True

In data networks, the task of directing information efficiently to the correct destination is handled by connectivity devices, primarily switches and routers.

True

Modern Ethernet networks are based on the star topology.

True

Most cloud service providers use virtualization software to supply multiple platforms to multiple users.

True

POP3"s design makes it best suited to users who retrieve their mail from the same workstation all the time.

True

SONET specifies framing and multiplexing techniques at the Physical layer.

True

Spread spectrum is a popular way of making wireless transmissions more secure.

True

The smallest LANs do not have a backbone.

True

Wireless networks are not laid out using the same topologies as wired networks.

True

Wireless signals experience attenuation.

True

Switches can create ____ by grouping a number of ports into a broadcast domain. - trunks - spanning trees - gateways - VLAN

VLANs

The individual geographic locations connected by a WAN are known as ____. - WAN sites - WAN links - network service providers - central offices

WAN sites

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

WANs

All Ethernet networks, independent of their speed or frame type, use an access method called ____. - CSMA - CSMA/DC - CSAM/CD - CSMA/CD

CSMA/CD

In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range. - active - passive - fixed - open

active

A network ____________________ is the part of a network to which segments and significant shared devices connect.

backbone

A ____ can interpret physical addressing information. - repeater - switch - hub - bridge

bridge

The most common logical topologies are ____ and ring. - bus - star - wired - hybrid

bus

____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel. - Channel bonding - Channel aggregation - Frame aggregation - Frame bonding

Channel bonding

The gateways that make up the Internet backbone are called ____ gateways. - proxy - core - Internet - default

Core

A class ____ network class is reserved for special purposes. - A - B - C - D

D

After SONET, BPL has the best maximum throughput available.

False

IMAP4 servers require less storage space and usually more processing resources than POP servers do.

False

In a star topology, a single connection failure will halt all traffic between all sites.

False

Most satellites circle the Earth ____ miles above the equator in a geosynchronous orbit. - 100 - 1240 - 6,000 - 22,300

22,300

ISDN PRI uses ____ B channels and one 64-Kbps D channel. - 10 - 12 -23 - 32

23

SMTP operates from port ____. (M/C)

25

PPTP and L2TP are the only protocols that can be used to carry VPN traffic.

False

Within a classful addressing, ____ is the default subnet mask for a Class C address. - 255.255.255.255 - 255.255.255.0 - 255.255.0.0 - 255.0.0.0

255.255.255.0

802.11b and g signals can extend a maximum of ____________________ feet and still deliver data reliably.

330

Within a classful addressing subnet mask, the ____ bits indicate that corresponding bits in an IPv4 address contain network information. - 0 - 1 - first eight - last eight

1

An 802.11g antenna has a geographic range of ____ meters. - 20 - 100 - 300 - 330

100

The result from ANDing 11001111 with 10010001 is ____. - 11001111 - 10010001 - 10000001 - 00000001

10000001

The most common 1-Gigabit Ethernet standard in use today is ____. - 1000Base-T - 1000Base-SX - 10GBase-SR - 1000Base-LX

1000Base-LX

The 10-gigabit fiber optic standard with the shortest segment length is ____. - 10GBase-T - 10GBase-SR - 10GBase-LR - 10GBase-ER

10GBase-SR

POP3 (Post Office Protocol, version 3) relies on TCP and operates over port ____. (M/C)

110

The average geographic range for an 802.11a antenna is ____ meters. - 20 - 100 - 330 - 600

20

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 - CIR (committed information rate) - BRI (Basic Rate Interface) - DS0 (digital signal, level 0)

OC (Optical Carrier) level

Repeaters operate in the ____ layer of the OSI model. - Physical - Network - Transport - Session

Physical

A unique characteristic of the 802.11 data frame is its ____ field. - Frame Control - Sequence Control - Data - Duration

Sequence Control