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Test your basic knowledge |
CCNA Network Fundamentals Vocab
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Subjects
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cisco
,
it-skills
,
ccna
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A 1-bt flag in the TCP header used to indicate the initial value of the sequence number. The SYN flag is only set in the first two segments of the three-way TCP connection establishment sequence.
SYN
host address
URG
classful addressing
2. Also known as boolean algebra. These consist of the AND OR and IF operations
maximum transmission unit
digital logic
ping sweep
logical topology
3. A group of 8 binary bits. It is similar to - but not the same as - a byte. One Application in computer network is to use octets to divide IPv4 addresses into four components
syntax
pinout
octet
digital logic
4. The cabling and connectors used to interconnect the network devices.
half duplex
Regional Internet Registries
physical media
router
5. A popular certification method for fiber systems. The OTDR injects light into the fiber and then graphically displays the results of the detected reflected light. The OTDR measures the elapsed transit time of reflected light to calculate the distance
filtering
logical network
media-dependent interface crossover
Optical time domain reflectometer
6. The connection of devices on a common media. Sometimes a physical network is also referred to as a network segment.
standards
subnet
physical network
global configuration mod
7. A system of network design characterized by one or more major components that are required to maintain operation.
single point of failure
argument
ARP table
ethernet PHY
8. A broadcast that is sent to a specific network or series of networks.
limited broadcast
distributed
FIN
dynamic or private ports
9. In ethernet a layer 2 device that receives an electrical signal in one port - interprets the bits - and makes a filtering or forwarding decision about the frame. If it forward - it sends a regenerated signal. Switches typically have many physical por
Requests for Comments
Internet service provider
switch
Network time protocol
10. In ethernet - the process performed by a bridge or switch when it decides that it should send a frame out another port.
encode
Thicknet
forwarding
media access control
11. A list of router holds in memory for the purpose of deciding how to forward packets.
TCP/IP
virtual circuit
maximum transmission unit
routing table
12. A 1-bit flag in the tcp header that indicates the acknowledgment field is valid.
binary
ACK
Internet Engineering Task Force
fiber-optic cable
13. The arrangement of the nodes in a network and the physical connections between them. This is the representation of how the media is used to connect the devices.
media-dependent interface (MDI)
deterministic
physical topology
limited broadcast
14. Data that directs a process. a flag in a data-link frame is an example of control data.
signal
segmentation
media independent
control data
15. From the priviledged mode - you can enter the device's global caonfiguration mode. From global configuration mode - you can configure global parameters or enter other configuration submodes such as interface - router and line configuration submodes.
classless addressing
PSH
global configuration mod
domain name
16. Refers to whether the performance of a device - attached to a particular type of LAN - can be accurately predicted. Token Ring LANS are deterministic - but ethernet LANS are non deterministic.
dynamic routing
distributed
fiber-optic cable
deterministic
17. In networking - a general term referring to any energy signal on a transmission medium that is not part of the signal used to transmit data over that medium.
carrier
noise
multiplexing
pulse amplitude modulation
18. A unicast IP address that is considered to have three parts: a network part - a subnet part - and a host part. The term classful refers to the fact that classful network rules are first applied to the address - and then the rest of the address can be
tracert
internetwork
full duplex
classful addressing
19. Define in RFC 1918 - an IP address that does not have to be globally unique because the address exists inside packets only when the packets are inside a single private IP internetwork. Private IP addresses are popularly used in most company today - w
high-order bit
prviate address
interframe spacing
pinout
20. A type of hash function that is used to produce a small - fixed size checksum of a block of data - such as a packet or a computer file. A CRC is computed and appended before transmission or storage - and verified afterward by the recipient to confirm
cyclic redundancy check
virtual terminal line
nonvolatile RAM (NVRAM)
radio frequency interference
21. Path through an internetwork through which packets are forwarded.
radix
dispersion
router
signal
22. In networking - this term is used in several ways. With ethernet hub and switch hardware - port is simply another name for interface - which is a physical connector in the swithc into whic a cable can be connected. With TCP and UDP - a port is a soft
logical network
data communications equipment
intranet
port
23. A computer program that runs in the background and is usually initiated as a process. Daemons often support server processes.
directed broadcast
metropolitan-area network
daemon
International Organization for Standardization
24. Devices at the user end of a user-network interface that serves as a data source - destination or both. DTE connects to a data network through a DCE device and typically uses clocking signals generated by the DCE. DTE includes such devices as compute
goodput
jam signal
digital logic
data termianl equipment
25. In ethernet - a device that receives an electrical signal in one port - interprets the bits and regenerates a clean signal that it sends out all other ports of the hub. Typically it also supplies several ports - which are oftentimes RJ-45 jacks.
administratively scoped address
download
AND
hub
26. A method of internal processing by LAN switches. The switch must receive the entire frame before it sends the first bit of the frame. Store and forward switch is the method used by cisco switches.
IP
dispersion
router protocol
store and forward
27. The lower of the two sublayers of the IEEE standard for ethernet. It is also the name of that sublayer
runt frame
media access control
attenuation
round-trip time
28. Any communication in which the sender and receiver do not prearrange for communications to occur
default gateway
encode
connectionless
Network address translation (NAT)
29. The dividing of IP datagrams to meet the MTU requirement of a layer 2 protocol.
delimiter
channel service unit/data service unit
backoff algorithm
fragmentation
30. Defines which wires in a cable should connect to each pin on the connectors on both ends of a cable. For example - a UTP cable used for ethernet - used for a straight-through cable pinout - connects the wire at pin 1 on one end with the pin 1 on the
backoff algorithm
pinout
post office protocol
multicast group
31. An application protocol typically not used by end users. Instead - it is used by the network management software and networking devices to allow a network engineer to monitor and troubleshoot network problems.
smtp
cyclic redundancy check
Interpret as command
bit time
32. The retransmission delay used with CSMA/CD when a collision occurs. The algorithm forces each sender that detected the collisions to delay a random amount of time before attempting to retransmit.
Internet control message protocol
prefix length
backoff algorithm
Thicknet
33. An IPv4 multicast address that is restricted to a local group or organization.
distributed
limited scope address
control data
cache
34. The portion of a binary number that carries the most weight - the one written farthest to the left. High-order bits are the 1s in the network mask.
protocol data unit
high-order bit
network interface card
ARP table
35. The range of ip addresses that can be assigned by the DHCP server.
decapsulation
backoff algorithm
ARP table
address pool
36. A corporate system such as a website that is explicitly used by internal employees. Can be assessed internally or remotely
Packet Tracer
ARP table
host
intranet
37. A time period between ethernet frames that allows fairness with the CSMA/CD algorithm. Without a space between frames in other words - without some time with no frames being sent a NIC might always listen for silence - never hear silence and therefor
AND
interframe spacing
synchronous
Address resolution protocol
38. A part of a computer network that every device communicates with using the same physical medium. Network segments are extended by hubs or repeaters.
Interpret as command
round-trip time
network segment
AND
39. Network protocols or technologies that do not use the acknowledgment system to guarantee reliable delivery of information
best effort
distributed
AND
console port
40. Binary digit used in the binary numbering system. Binary digits are units of information storage and communication in computing. Each bit can be either a 0 or a 1.
TCP/IP
bit
ACK
convergence
41. Program used to download and send email. Email clients use POP3 to receive emails and use SMTP to send emails. Also called an email client
maximum transmission unit
asynchronous
daemon
Mail user agent
42. A network model defined by the IETF that has been implemented on most computers and network device in the world.
redundancy
synchronous
ARP cache
TCP/IP
43. A command on many computer operating systems that discovers the IP addresses - and possibly host names - of the routers used by the network when sending a packet from one computer to another.
administratively scoped address
PSH
tracert
enable password
44. In ethernet - the results of two nodes transmitting simlutaneously. The signals from each device are damaged when they combine on the media
physical media
collision
ARP cache
host
45. The process by which a router receives an incoming frame - discards the ata link header and trailer - makes a forwarding decision based on the destination IP address - adds a new data-link header and trailer based on the outgoing interface and forwar
half duplex
transparent bridging
routing
token passing
46. A number used in the 802.11 header to specify the session between a wireless client and the access point.
dotted decimal
association identity AID
bandwidth
server message block
47. The IPv4 address block 192.0.2.0 to 192.0.2.255 that is set aside for teaching and learning purposes. These addresses can be used in documentation and network examples.
MAC table
flooding
test-net address
Organizational Unique Identifier
48. Unencrypted password used to allow access to privledge EXEC mode from IOS user EXEC mode.
logical topology
enable password
address pool
Internet control message protocol
49. The optical or electrical impulse on a physical medium for purposes of communication.
collision
bit
signal
domain name system
50. An IPV4 addressing scheme that uses a subnet mask that does not follow classful addressing limitations. It provides increased flexibility when dividing ranges of IP addresses into separate networks. Classless addressing is considered the best in curr
classless addressing
delimiter
routing
gateway
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