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Net > 04 > Flashcards

04 Flashcards

1
Q

FTP (Data) protocol: Port:

A

TCP, 20

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2
Q

FTP (command/control) protocol: Port:

A

TCP 21

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3
Q

SSH Protocol: Port:

A

TCP 22

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4
Q

Telnet (Data) protocol: Port:

A

TCP 23

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5
Q

SMTP (Data) protocol: Port:

A

TCP 25

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6
Q

DNS protocol: Port:

A

UDP(Queries):53 TCP(Zone Transfers):53

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7
Q

DHCP (Data) protocol: Port:

A

UDP 67/68

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8
Q

TFTP protocol: Port:

A

UDP 69

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9
Q

HTTP protocol: Port:

A

TCP 80

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10
Q

POP3 protocol: Port:

A

TCP 110

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11
Q

IMAP4 protocol: Port:

A

TCP 143

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12
Q

SNMP protocol: Port:

A

UDP 161/162

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13
Q

LDAP protocol: Port:

A

TCP 389

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14
Q

Https protocol: Port:

A

TCP 443

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15
Q

RLOGIN protocol: Port:

A

TCP 513

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16
Q

__________ Allows us to optimize available IP addresses by specifying a different subnet mask for an ip address

A

Variable-length subnet masking (VLSM)

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17
Q

_________ Is a reliable connection-oriented Transport Layer protocol that accepts data of any length from upper-layer protocols and breaks them into segments

A

TCP

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18
Q

TCP uses a process known as ___________ to establish a logical connection prior to the transmission of data. (_____)(______,_______)(_____)

A

Three-way handshake
Syn Syn/Ack Ack

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19
Q

The ____________ is an unreliable, connectionaless protocol that does not guarantee data transmission, Since _______ is void of fields, it uses a fixed ___________

A

UDP , 8-byte header

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20
Q

Well-known port ranges?

A

0-1023

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21
Q

Registered port ranges?

A

1024-49151

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22
Q

_______ are objects that allow software to communicate and send data across a network connection via access to a computers NIC

A

socket

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23
Q

Within a netsts what does the Proto, loacl address, foriegn address, and state columns show?

A

Protocols
Source IP
Destination IP
State of the connection

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24
Q

What does each of these states in a netstat mean?

Established
Syn_sent
SYN_RECV
CLOSE
LISTEN
CLOSING

A

A connection has been established
Actively trying to make connection
Received a connection request
The socket is not being used
Socket is listening for incoming connections
Sockets are shutdown not all data was sent

25
Q

________ is a protocol used by a host to obtain an IP address from a DHCP server Protocol____ Port#_____
DORA

A

DHCP UDP 67/68
Discover, Offer, Request, Acknowledge

26
Q

________ Is a distributers name system that contains services to map computer names to IP addresses and IP addresses to computer names

A

Domain Name System (DNS)

27
Q

What is a root name server?

A

are machines that provide root access to the root zone file, containing information on all TLDs

28
Q

What is a DNS Generic TLD (gTLD)

A

TLDs with three or more characters, .com, .net

29
Q

What is a DNS sponsored TLD (sTLD)

A

TLDs owned by an organization .mil

30
Q

What is a DNS country code TLD (cTLD)

A

TLDs owned by country’s .ru .cn

31
Q

__________ is a unique name used to identify a particular system in the namespace, sometimes referred too as an absolute domain name

A

Fully Qualified Domain Name (FQDN)

32
Q

What is a portion of the domain namespace?

A

zone

33
Q

One DNS server acts as the ______ The ___ acts as the primary DNS server, any other authoriaticve servers for the zone are termed ________

A

SOA, name servers

34
Q

What is a forward look-up?

A

looking up a website using its name and the computer turning that into an IP address to follow (Ip-Name)

35
Q

What is a reverse lookup?

A

Looking up an ip address and the computer using that to follow its name (Name-IP)

36
Q

What DNS Resource records are the follwoing?
A
AAAA
CNAME
MX
SRV
PTR

A

Ipv4 host records
Ipv6 Host records
canonical name, alias like using another word for a command to reach somewhere
Mail exchange
Service record
Pointer record, maps IP addresses to names for reverse lookups

36
Q

_____ are how a client requests the FQDN for an IP or gets an IP for a known FQDN

Protocol/port number

A

DNS Queries UDP/53

37
Q

An _______ DNS query, the client makes additional DNS Queries

A

Iterative

38
Q

An _______ DNS query makes quries to other DNS servers

A

Recursive

39
Q

A DNS _____ is a server used to forward DNS queries to DNS servers outside the network

A

forwarder

40
Q

Storing previously resolved responses to queries is called ______

A

caching

41
Q

_________ are conducted when a primary DNS server transfers its cache/database to a secondary or back-up DNS server.

Protocol/port number

A

Zone transfers
TCP 53

42
Q

_______ is used to send mail messages across a network and is the basis for internet email

Protocol/port number

A

Simple Mail Transfer Protocol
TCP 25

43
Q

_________ is a protocol used to retrieve email form a mail server

protocol/port number

A

Post Office Protocol version 3POP3

TCP: 110

44
Q

___________ is a more advanced version of POP3 and allows you to search through email/messages and orgainze them into folders

protocl/port number?

A

Internet message access protocol version 4
IMAP4

TCP: 143

45
Q

_________ is the set of rules for exchanging files, image, sound, video, and other multimedia files form server to client (unsecured)

A

HTTP

TCP:80

46
Q

_________ Is an extension to the HTTP protocol where the HTTP protocol rides over the secure sockets layer or transport security layer, making it more secure

Protocol/port number?

A

HTTPS

TCP: 443

47
Q

_______ is an application layer cryptographic protocol of the TCP/IP suite capable of securing other application layer protocols

Where does it reside in the OSI model?

_____ relies upon the exchange of server certificates to negotiate encryption/decryption

A

SSL

Presentation

SSL

48
Q

_____ is an upgrade to, and more robust SSL

A

TLS

49
Q

_____ is a robust file manipulation application used for exchanging and manipulating files over a TCP-based computer network

Protocol/port numbers?

A

FTP

TCP Data:20 Command:21

50
Q

What is the difference between passive and active mode in FTP?

protocol/port numbers?

A

Active: Pizza delivery, server send me data
Passive: Pizza takeout, I the client go to the server and pick up the data

TCP Data:20 Command:21

51
Q

______ Is a simple protocol that only provides for the reading and writing of files or mail

protocol/port numbers?

A

Trivial File Transfer Protocol (TFTP)

UDP:69

52
Q

_________ is a binary TCP/IP Application layer protocol allowing a user to establish a virtual connection with another host

A

telnet

TCP:23

53
Q

_____ is a UNIX utility often used as an alternative to telnet which allows a user on a UNIX host to login to another UNIX host have a TCP/IP Internet internetwork

A

Remote Login RLogin

TCP:513

54
Q

______ is a cryptographic protocol that allows data to be exchanged using a secure channel between two networked devices

Protocol/port numbers?

A

SSH Secure shell

TCP:22

55
Q

______ is an application Layer Protocol used to structure information on a directory server (telephone/look up address)

Protocol/port numbers

A

Lightweight Directory Access LDAP

TCP: 389

56
Q

______ is used to manage and collect statistical network data, such as performance statistics, network availability and error rates, from remote devices through polling

A

SNMP

UDP 161 Trap messages 162

57
Q

____________ allows the management of a network device through the network or within normal communication channels

A

In-band management
(over the network)

58
Q

__________ allows management outside of normal communication channels. This type of management is through a channel physically seperated form the network.

A

Out-of-band management
(Through a cable)

Net (6 decks)

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