Network Plus Chapter 4-7

SONET's extraordinary _____ results from its use of a double-ring topology over fiber-optic cable. a. throughput b. low cost c. fault tolerance d. latency

fault tolerance

A UDP header contains ____ fields. a. four b. six c. eight d. ten

four

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

hot-swappable

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

hub

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

hub

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

lanes

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

local loop

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

reassembles

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

redundant

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

router

Collectively, MPLs labels are sometimes called a _______. a. header b. shim c. frame d. title

shim

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

signal

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

smart jack

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. simple commands b. special clients c. special switches d. special software

special commands

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

Nonroutable

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

collision

On an Ethernet network, a(n) _____ is the portion of a network in which collision occur if two nodes transmit data at the same time. a. collision domain b. crash domain c. interference domain d. duplicate domain

collision domain

In the domain name www.google.com, _____ is the top-level domain (TLD). a. http b. www c. google d. com

com

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

content

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

daisy-chain

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

data transceiver

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

depicts a network in a broad scope

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

dial-up

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

Fixed packet

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. a. Variable Prefix b. Address Prefix c. Format Prefix d. Field Prefix

Format Prefix

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

Frame relay

______ are combinations of networking hardware and software that connect two dissimilar kinds of networks. a. Routers b. Switches c. Gateways d. Broadcast domains

Gateways

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

Hardware

A complex combinatoin of topologies is known as a _________ topology. a. mixed b. hybrid c. compound d. multipart

Hybrid

_____ operates at the Network layer and manages multicasting. a. IGMP b. ICMP c. UDP d. IP

IGMP

In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing. a. TCP b. UDP c. IP d. ARP

IP

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 ______. a. TCP b. ICMP c. UDP d. IP

IP

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. ACT c. TX d. RX

LNK

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

Long reach

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

Mesh

_______ is a simple Application layer protocol used to synchronize the clocks of computers on a network. a. NNTP b. NTP c. PING d. ARP

NTP

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

Static

_____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite. a. NNTP b. NTP c. Telnet d. FTP

Telnet

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

Terminal adapter

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

Terminators

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

Twisted pair

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

Type

_____ is more efficient than TCP for carrying messages that fit within one data packet. a. IP b. UDP c. ICMP d. IGMP

UDP

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

VLANs

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

WAN links

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

WANs

In IPv4 addressing, a node with an IP address of 168.34.88.29 belongs to a Class _____ network. a. A b. B c. C d. D

B

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

Bridge

In IPv4 addressing, an IP address whose first octet is in the range of 192-223 belongs to a Class ____ network. a. A b. B c. C d. D

C

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

CO

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

Capacity

A(n) _____ address represents any one interface from a group of interfaces, any one of which can accept a transmission. a. anycast b. unicast c. multicast d. singlecast

anycast

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

bonding

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

bus

TCP is a(n) _______ subprotocol. a. open-ended b. indiscriminating c. connection-oriented d. conectionless

Connection-oriented

In most cases, BOOTP has been surpassed by the more sophisticated IP addressing utility, _______. a. DNS b. RARP c. DHCP d. APIPA

DHCP

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

DSLAM

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

Data link

______ ARP table entries are created when a client makes an ARP request that cannot be satisfied by data already in the ARP table. a. Static b. Dynamic c. Temporary d. On-demand

Dyanmic

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

External

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

FITH

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

23

The default subnet mask for a Class B network is _______. a. 255.0.0.0 b. 255.255.0.0 c. 255.255.255.0 d. 255.255.255.255

255.255.0.0

In IPv4 addressing, each IP address is a unique _____ number. a. 12-bit b. 32-bit c. 64-bit d. 128-bit

32-bit

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

1 Gbps

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

10

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 ________. a. 10.43.3.87/23 b. 10.43.3.87:23 c. 10.43.3.87-23 d. 23:10.43.3.87

10.43.3.87:23

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

1000Base-LX

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

10GBase-SR

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

18

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

OC (Optical Carrier) level

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

PCIe

_____ is a utility that can verify that T CP/IP is installed, bound to the NIC, configured correctly, and communicating with the network. a. ARP b. PING c. Telnet d. FTP

PING

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. PPP d. PSTN

PSTN

In dotted decimal notation, a(n) _____ seperates each decimal. a. dash b. slash c. colon d. period

Period

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

Physical

A(n) ______ number is the address on a host where an application makes itself available to incoming or outgoing data. a. port b. source c. destination d. application

Port

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. header c. preamble d. frame

Preamble

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

Publicly

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

RAM

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

Repeater

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

SCMA/CD

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

STP (Spanning Tree Protocol)

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

Security