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CPT-220 > Chapter 5 > Flashcards

Chapter 5 Flashcards

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1
Q

TELNET

A

(Terminal Network) an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection

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2
Q

Well known ports

A

only assigned by the IANA * can only be used by the system or root processes and by programs that are executed by privileged users

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3
Q

Application Layer Protocols

A

designed to carry out specific purposes or functions

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4
Q

Authoritative name servers

A

attached to domain servers and responsible for answering requests received about the domain space they are part of.

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5
Q

routing metrics

A

used by a router to make routing decisions through a routing table

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6
Q

convergence

A

the time it takes for routing tables to update

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7
Q

ICMP

A

(Internet Control Message Protocol) checks to see if the data packets have successfully reached the destination

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8
Q

FTP

A

(File Transport Protocol) a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet

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9
Q

Ping

A

a network administration utility that is used to test connectivity to specific nodes on a network and to measure the round-trip time it takes for a packet to get to a specific destination and back

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10
Q

Permanent host group

A

a host group with permanent IP addresses

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11
Q

IGP

A

(Interior Gateway Protocol) used for exchanging routing information between gateways (commonly routers) within an autonomous system

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12
Q

DNS

A

(Domain Name System) the protocol that converts URLs to IP addresses

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13
Q

OSPF

A

(Open Shortest Path First) gathers link state information from available routers and constructs a topology map of the network

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14
Q

RTP

A

(Real-Time Transport Protocol) a packet format for delivering audio and video over IP networks

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15
Q

protocol stack

A

all the protocols from a protocol suit that are currently being used to carry out specific functions of network communications within the computer

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16
Q

Neighbor table

A

contains information about the routers that are directly connected to the current router.

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17
Q

RFC

A

(Request For Comment) all networking standards and protocols are defined by these various documents

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18
Q

topology table

A

an aggregation of the routing tables of all routers connected to current router

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19
Q

EIGRP

A

(Enhanced Interior Gateway Routing Protocol) used on a computer network to help automate routing decisions and configuration

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20
Q

RIP

A

(Routing Information Protocol) implements a limit on the number of hops allowed in a path from source to destination

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21
Q

hop

A

one portion of the path between source and destination

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22
Q

Link state routing protocol

A

every node constructs a map of the connectivity to the network, in the form of a graph, showing which nodes are connected to which other nodes

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23
Q

ARP

A

(Address Resolution Protocol) responsible for determining what the MAC address is for the next hop and then adjust the frame accordingly so that the frame can be moved to the next hop

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24
Q

Transient host group

A

host group formed for a specific multicast and then disbanded after use

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25
Dynamic or private ports
can be used at any time and are assigned dynamically by the system
26
hybrid routing protocols
uses distance-vector metrics-based method to determine the best route, while using link state to update the other routers
27
tracert
the Windows implementation of a trace route
28
IPv6
128-bit address, will never run out of IP addresses
29
Block
data broken into segments that contain headers
30
checksum
when a network device receives a data packet from another network device, it runs an algorithm on the header of the IP packet and then compares the result of this algorithm with the result stored in the IP header
31
ACK
acknowledgement field
32
IGMP
(Internet Group Management Protocol) used by IP hosts to manage their multicast group's dynamic membership and by connecting routers to find those group members
33
Resolvers
the clients that make requests of the Domain Name System
34
SYN
indicate that the segment contains synchronizing sequence numbers
35
Port addresses/ports
determine which upper-layer protocols, services, and processes each data segment is intended for
36
routed protocols
the process of selecting best paths in a network
37
SSH
(Secure Shell) a cryptographic (encrypted) network protocol to allow remote login and other network services to operate securely over an insecure network.
38
UDP
(User Datagram Protocol) connection-less counterpart of TCP, does not guarantee reliable delivery and is primarily used to give other protocols access to datagram services
39
Lost data packets
Packets never reach their intended destination
40
Name servers
database of all the name domains on the Web
41
Routing tables
small databases that routers use to determine which route to take
42
Static routing
uses a manually-configured routing entry, rather than information from a dynamic routing traffic
43
IS-IS
(Intermediate System to Intermediate System) used to determine routing tables within an autonomous system using link state routing
44
EGP
used to exchange routing information between autonomous systems
45
routing table
contains the routes to the various destinations
46
TCP
(Transmission Control Protocol) provide communication services between Application layer services, protocols, and processes and the IP.
47
protocol suite
a group of networking protocols that are designed to work together to accomplish the separate little tasks needed to allow network communications
48
IPv4
32-bit address
49
SNMP
(Simple Network Management Protocol) manages devices on IP networks
50
data corruption
the data contained in the packet is corrupted
51
MTU
(Maximum Transmission Unit)
52
dynamic routing
alter the path that the route takes through the system in response to a change in conditions
53
SIP
(Session Initiation Protocol) protocol for signaling and controlling multimedia communication sessions
54
Denial of Service attack
using pings across a large range of computers to bring down a server
55
out-of-order packet delivery
Packets arrive in a different order than the one they were sent in
56
Registered ports
used consistently on all systems
57
NTP
(Network Time Protocol) a means of synchronizing clocks over a computer network
58
BGP
(Border Gateway Protocol) designed to exchange routing and reachability information between autonomous systems (AS) on the Internet.
59
Distance-Vector Routing Protocol
when each router periodically sends an update of its routing table to all the neighboring routers that are direcrtly connected to it
60
TLS
(Transport Layer Security) a protocol that ensures privacy between communicating applications and their users on the Internet
61
SMTP
(Simple Mail Transport Protocol)
62
Duplicate arrivals
More than one copy of the data packet arrived at the destination computer
63
TCP/IP Protocol Suite
used for Internet commuinications
64
Trace route
a utility used to report back each hop along a route to a specific IP destination.
65
POP
(Post Office Protocol) local e-mail clients to retrieve e-mail from a remote server over a TCP/IP connection.
66
IMAP
(Internet Mail Access Protocol) used by e-mail clients to retrieve e-mail messages from a mail server over a TCP/IP connection.
67
steady state
all the routers in a network are updated/converged
68
RDP
(Remote Desktop Protocol) a remote access network protocol

CPT-220 (8 decks)

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