Network Implementation Exam 2

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

c. hot-swappable

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

c. hybrid

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

c. interference

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

c. nonroutable

Collectively, MPLS labels are sometimes called a ____. a. title b. frame c. shim d. header

c. shim

In addition to viewing its LEDs and using a loopback plug to test a NIC's functionality, you can also check a NIC's connectivity with ____. a. special switches b. special clients c. simple commands d. special software

c. simple commands

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

c. single

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

c. terminal adapter

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

c. type

The result from ANDing 11001111 with 10010001 is ____. a. 00000001 b. 10010001 c. 11001111 d. 10000001

d. 10000001

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

d. 22,300

____ may use either the 2.4-GHz or 5-GHz frequency range. a. 802.11a b. 802.11b c. 802.11g d. 802.11n

d. 802.11n

A class ____ network class is reserved for special purposes. a. A b. B c. C d. D

d. D

A ____ aggregates multiple DSL subscriber lines and connects them to the carrier's CO. a. terminal adapter b. smart jack c. terminator d. DSLAM

d. DSLAM

A unique characteristic of the 802.11 data frame is its ____ field. a. Duration b. Frame Control c. Data d. Sequence Control

d. Sequence Control

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

d. WANs

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

d. active

A ____ occurs when two transmissions interfere with each other. a. multiple access event b. jam c. carrier sense d. collision

d. collision

CompactFlash is an example of a peripheral device attached to the computer's ____ bus. a. remote b. internal c. onboard d. external

d. external

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

d. frequency

To install a NIC, you must first install the ____. a. bus b. drivers c. software d. hardware

d. hardware

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

d. hostname

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

d. iwconfig

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

d. last 8 bits

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

d. line-of-sight

On most modern WANs, a ring topology relies on ____ rings to carry data. a. open b. serial c. flexible d. redundant

d. redundant

When using classful IPv4 addressing, a network ID always ends with an octet of ____. a. 0 b. 00000000 c. 1 d. 255

a. 0

1000Base-SX has a maximum throughput of ____. a. 1 Gbps b. 10 Gbps c. 100 Gbps d. 1000 Gbps

a. 1 Gbps

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

a. 20

SMTP operates from port ____. a. 25 b. 11 c. 110 d. 250

a. 25

____ is the least popular WLAN standard. a. 802.11a b. 802.11b c. 802.11g d. 802.11n

a. 802.11a

A(n) ____ is the place where a telephone company terminates lines and switches calls between different locations. a. CO b. EO c. DO d. TO

a. CO

Traditional switches operate at the ____ layer of the OSI model. a. Data link b. Network c. Session d. Physical

a. Data link

____ means that a telephone company connects residential users to its network with fiber-optic cable. a. FITH b. OLT c. FITL d. PON

a. FITH

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

a. Frame relay

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

a. LNK

The most popular mail server programs are Sendmail and ____. a. Microsoft Exchange Server b. Eudora c. AOL mail d. Microsoft Outlook

a. Microsoft Exchange Server

The data rate of a particular SONET ring is indicated by its ____, a rating that is internationally recognized by networking professionals and standards organizations. a. OC (Optical Carrier) level b. DS0 (digital signal, level 0) c. BRI (Basic Rate Interface) d. CIR (committed information rate)

a. OC (Optical Carrier) level

By far, the most popular expansion board NIC today is one that uses a(n) ____ bus. a. PCIe b. ISA c. ExpressCard d. onboard

a. PCIe

Each time a computer starts up, the device drivers for all its connected peripherals are loaded into ____. a. RAM b. CMOS c. ROM d. EEPROM

a. RAM

To eliminate the possibility of a broadcast storm, switches and bridges implement the ____. a. STP (Spanning Tree Protocol) b. RIP (Routing Information Protocol) c. BGP (Border Gateway Protocol) d. OSPF (Open Shortest Path First) protocol

a. STP (Spanning Tree Protocol)

In a process called ____, two 64-Kbps ISDN B channels can be combined to achieve an effective throughput of 128 Kbps. a. bonding b. slicing c. linking d. merging

a. bonding

A ____ can interpret physical addressing information. a. bridge b. repeater c. switch d. hub

a. bridge

The most common logical topologies are ____ and ring. a. bus b. hybrid c. wired d. star

a. bus

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

a. content

The ____ gateway is the gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets. a. default b. Internet c. core d. proxy

a. default

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

a. dish antenna

PCIe slots vary depending on the number of ____ they support. a. lanes b. labels c. processors d. cards

a. lanes

The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____. a. local loop b. NIU (Network Interface Unit) c. central office d. demarcation point

a. local loop

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

a. 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. a. reserved b. open for general use c. out-of-range d. unobtainable

a. reserved

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

a. signal

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

a. twisted pair

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

b. 1

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

b. 100

The standard message format specified by SMTP allows for lines that contain no more than ____ ASCII characters. a. 100 b. 1000 c. 10,000 d. 1,000,000

b. 1000

Together, the FCS and the header make up the ____-byte "frame" for the data. a. 15 b. 18 c. 21 d. 24

b. 18

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

b. 255.255.255.0

____ satellites are the type used by the most popular satellite data service providers. a. Medium earth orbiting b. Geosynchronous earth orbiting c. Transponder d. Low earth orbiting

b. Geosynchronous earth orbiting

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

b. Interference

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

b. Mesh

Repeaters operate in the ____ layer of the OSI model. a. Transport b. Physical c. Session d. Network

b. Physical

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

b. Static

Switches can create ____ by grouping a number of ports into a broadcast domain. a. spanning trees b. VLANs c. trunks d. gateways

b. VLANs

The gateways that make up the Internet backbone are called ____ gateways. a. default b. core c. Internet d. proxy

b. core

A physical topology ____. a. specifies connectivity methods b. depicts a network in broad scope c. specifies addressing schemes d. specifies device types

b. depicts a network in broad scope

In ____, a wireless signal splits into secondary waves when it encounters an obstruction. a. reflection b. diffraction c. scattering d. bounce back

b. diffraction

In ____ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link. a. variable b. fixed c. open d. mobile

b. fixed

What sets ATM apart from Ethernet is its ____ size. a. frame b. fixed packet c. channel d. variable packet

b. fixed packet

A ____ is a repeater with more than one output port. a. bridge b. hub c. switch d. router

b. hub

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

b. hub

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

b. long reach

A program similar to mtr, ____, is available as a command-line utility in Windows operating systems. a. nbstat b. pathping c. dig d. route

b. pathping

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

b. preamble

WANs typically send data over ____ available communications networks. a. serially b. publicly c. privately d. individually

b. publicly

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

b. reassembles

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

b. router

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

b. security

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

b. smart jack

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

b. terminators

1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable. a. 2 b. 5 c. 10 d. 100

c. 10

In the case of connecting two WLANs, access points could be as far as ____ feet apart. a. 500 b. 800 c. 1000 d. 1200

c. 1000

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

c. 1000Base-LX

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

c. 10GBase-SR

POP3 (Post Office Protocol, version 3) relies on TCP and operates over port ____. a. 25 b. 11 c. 110 d. 250

c. 110

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

c. 23

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

c. CSMA/CD

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

c. Channel bonding

Which satellites transmit and receive signals in the 12 to 18 GHz band? a. L- b. Ka- c. Ku- d. S-

c. Ku-

An example of a popular client email software is ____. a. Sendmail b. Microsoft Exchange Server c. Microsoft Outlook d. MIME

c. Microsoft Outlook

IMAP (Internet Message Access Protocol) is a mail retrieval protocol that was developed as a more sophisticated alternative to ____. a. SMTP b. MIME c. POP3 d. POP

c. POP3

The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country. a. SLIP b. POTS c. PSTN d. PPP

c. PSTN

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

c. WAN links

Buses differ according to their ____. a. speed b. connectors c. capacity d. resistance

c. capacity

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

c. classful

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

c. daisy-chain

NICs contain a(n) ____, which transmits and receives data signals. a. mouse port b. antenna c. data transceiver d. keyboard port

c. data transceiver

A ____ connection is one in which a user connects her computer, via a modem, to a distant network and stays connected for a finite period of time. a. remote b. direct c. dial-up d. virtual

c. dial-up

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

c. 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. a. underscore ( _ ) b. backward slash ( \ ) c. forward slash ( / ) d. dash ( - )

c. forward slash ( / )