Quiz #2 Flashcards
What are the three elements of communication?
1) Message source, or sender
2) Destination, or receiver
3) Transmission medium, channel
Which protocol operates at Layer 1 and Layer 2 of the OSI model?
Ethernet protocol (MAC)
What does MAC stand for?
Media Access Control Address
What’s another word for MAC address?
Physical Address
Which protocols are used at Layer 3?
IPv4 and IPv6
What format are computer messages encapsulated into?
Frame
What are the 3 layers of hierarchical network?
1) Access
2) Distribution
3) Core
What is ARP?
Address Resolution Protocol - part of IPv4 protocol to convert IP address to MAC address
What is LAN?
Local Area Network refers to a group of interconnected local networks that are under the same administrative control
How many bits in an IPv4 addres?
32
How many bits in an IPv6 address?
128
What does the subnet mask do?
Signifies which part of the address is the network and which part is the host
What is CIDR?
Classless Inter-Domain Routing
What does DHCP stand for?
Dynamic Host Configuration Protocol
How are packets converted from private IP addresses to public?
Network Address Translation
What are the layers of the TCP/IP model?
- Application
- Transport
- Internet
- Network Access
What are the layers of the OSI model?
7 - Application
6 - Presentation
5 - Session
4 - Transport
3 - Network
2 - Data link
1 - Physical
What protocol is used at the application layer?
Hypertext Transfer Protocol (HTTP)
What protocol is used at the transport layer?
Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)
What is encapsulation with messages?
Placing one message format in another message format
What’s another word for frame?
Protocol Data Unit (PDU)
What is the size of a frame?
64-1518 bytes
What is an intranet?
A private LAN
How are IPv4 addresses grouped?
4 octets
