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