PNPT Flashcards by Kala Kenyon

What command will bring up your IP address

ifconfig

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Difference between bit size in IPv4 and IPv6

32 IPv4 and 128 IPv6

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Difference between formats for IPv4 and IPv6

IPv6 = colon separated hexadecimal format (8 groups of 4 hexadecimal digits)

IPv4 = dotted-decimal format (8 bits per section (octet), ranging from 0 to 255) - 4.3 billion

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What is a MAC

physical addy/unique identifier assigned to a network interface controllers (NIC)

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Where are MAC addresses stored

in a device’s firmware or ROM (read only memory)

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How many bits is a MAC address

48 bits

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What layer is the MAC address

data link layer

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What does TCP stand for

Transmission control protocol

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what does UDP stand for

user ditagram protocol

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TCP and UDP are 2 common ____ ____ protocols

transport layer protocols

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What is TCP

a connection-oriented protocl that provides reliable, ordered, and error-checked delivery of data packers over an IP network

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What is UDP

a connectionless protocl that is simpler and more lightweight - slower

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What is TCP used to transport?

web browing, email, file transfer, and remote login (due for the NEED of guarenteed deliver)

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What is UDP used for?

For real time applications like streaming media, online gaming, DNS, and VoIP

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What does TCP use to establish a connection?

The 3-way handshake

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What makes up the 3 way handshake?

SYN (Synchronize)
SYN-ACK (Synchronize-Acknowledge)
ACK (Acknowledge)

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Describe step 1 of the 3 way handshake

SYN (Synchronize) - Client initiates request by sending a TCP packet with the SYN flag set to a destination. This indicates the desire to establish a connection

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Describe step 2 of the 3 way handshake

SYN-ACK (Synchronize-Acknowledge) - The server receives the SYN packet and responds with a TCP packet that has both the SYN and ACK flags set

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Describe step 3 of the 3 way handshake

ACK (Acknowledge) - The client responds to the SYN-ACK packet by sending and ACK packet back to the destination which confirms the establishment of the connnection

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What does FTP stand for and what is the port number?

File transfer protocol
port 21 (TCP)

What does SSH stand for and what is the port number?

Secure shell - Port 22 (TCP)

what is the port number for Telnet?

Port 23 (TCP)

What does SMTP stand for and what is the port number?

Simple Mail Transfer Protocol - Port 25 (TCP)

What does DNS stand for and what is the port number?

Domain name system - port 53 (TCP and UDP)

What does HTTP stand for and what is the port number?

Hyper text transfer protocol - Port 80 (TCP)

What does HTTPS stand for and what is the port number?

Hyper text transfer protocol secure - Port 443 (TCP)

What does DHCP stand for and what is the port number?

Dynamic Host Configuration Protocol - Port 67 (UDP) and port 68 (UDP)

What does POP3 stand for and what is the port number?

Post office protocl version 3 - port 110 (TCP)

What does IMAP stand for and what is the port number?

Internet message access protocl port 143 (TCP)

What does SNMP stand for and what is the port number?

Simple Network Management Protocol - Port 161 (UDP)

What does RDP stand for and what is the port number?

Remote Desktop Protocl - Port 3389 (TCP)

What does NTP stand for and what is the port number?

Network time protocol - Port 123 (UDP)

What does SMB stand for and what is the port number?

Server Message Block - Port 445 (TCP)

What does FTPS stand for and what is the port number?

(FTP over SSL/TLS) File transfer protocol - Port 990 (TCP)

What does TFTP stand for and what is the port number?

Trivial File Transfer PRotocl - Port 69 (UDP)

What does LDAP stand for and what is the port number?

lightweight directory access protocol - Port 389 (TCP and UDP)

What does MySQL stand for and what is the port number?

My-StructuredQueryLanguage - Port 3306 (TCP)

What does RDP stand for and what is the port number?

Remote desktop protocol - Port 3389 (TCP)

in OSI model, what does OSI stand for?

Open Systems Interconnection

What are the OSI layers

Physical Data link layer Network layer Transport layer Session layer Presentation layer Application layer

What is the physical layer in OSI model

The electrical, mechanical, and functional characteristics of the physical interface between devices.

What is the data link layer of OSI

Ethernet, Wi-fi- and PPP (point to point protocol)

what is network layer of OSI

The IP (internet protocol)

What is the transport layer of OSI

TCP, UDP

What is the session layer of OSI

session estabblishment, token management, synchronization, checkpointing

What is the presentation layer in OSI

data translation, compression, encryption, decryption

What is the application layer of osi

Closest to end-user. HTTP, SMTP, FTP, DNS

How do you start apache web service?

sudo service apache2 start