Networking Review Flashcards
What does HTTP stand for?
HyperText Transfer Protocol
What is the port number for HTTP and HTTPS
80 for HTTP, 443 for HTTPS
What types of services does HTTP provide?
HTTP provides services for viewing webpages
Which OSI layer does HTTP exist in?
Layer 7: Application
Which OSI layer does the MAC address exist in?
Layer 2: Data-Link.
What does this value represent?
88:f7:c7:65:1a:36
MAC address
What does ARP stand for?
Address Resolution Protocol
What service does ARP provide?
ARP is used convert an IP address to a physical/MAC Address
Which OSI Layer does ARP exist in?
Layer 2: Data-Link.
What type of networking request does ARP first make?
ARP makes broadcast requests across its local network
What does DHCP Stand for?
Dynamic Host Configuration Protocol
What service does DHCP provide?
DHCP dynamically assigns out IP addresses to devices on its network.
What OSI Layer does DHCP exist in?
Layer 7: Application
What are the four steps of DHCP?
DHCP Discover, DHCP Offer, DHCP Request, DHCP ACK.
What does TCP stand for?
Transmission Control Protocol
Is TCP connection-oriented or connection-less?
Connection-oriented
What OSI Layer does tcp exist in?
Layer 4: Transport
What are the steps in a TCP connection?
SYN > SYN/ACK > ACK
What are the steps in a TCP termination?
FIN > ACK > FIN > ACK.
What does UDP stand for?
User Datagram Protocol
What type of services is UDP good for?
UDP can be beneficial when some data loss is okay, such as in video streaming.
What the advantages and disadvantages for Tree network typology?
Advantages: Easy to expand the network.
Disadvantages: If the top node is impacted, all devices below it are be impacted.
What the advantages and disadvantages for hybrid network typology
The advantages and disadvantages depend on the types of networks combined.
What the advantages and disadvantages for Ring network typology
Advantages:
- Simple to build.
- Does not require a central node to manage data transmission.
- Adding devices to the network is easy.
Disadvantages:
- If any one device goes down, the entire network is affected. In other words, every device is a point of failure.
- Latency is variable between devices on the network. For example, devices near one another will trade data quickly, but devices far away will experience high communication delay.
What does the dashed line represent in a network devices illustration?
The separation from the WAN on the left, to the LAN on the right.
What is a load balancer?
A load balancer is an intelligent network security device that distributes incoming network traffic across multiple servers.
Where would you place a load balancer?
Load balancers are typically placed after a firewall, between #2 and #3 in the diagram.
Which routing protocols use distance as criteria?
Distance-vector routing protocols include RIP and EIGRP.
Which routing protocols use speed as criteria?
Link-state routing protocols include OSPF.
Define binary
Binary is a numeric system that uses only two digits. Binary is the most basic form that data travels along a network.
What are the two binary states?
On (1) and off (0)
What are IP addresses used for?
A numerical identifier associated with each device on a computer network.
What are the two primary versions of IP addresses?
IPv4 and IPv6
How many octets are in a IPV4 address?
Four
What is the difference between primary and public IP addresses?
A public IP address can be accessed through the internet, while a private IP address is assigned to a device in a private space such as an office or home. Typically, private IP addresses are not directly exposed to the internet, so other people cannot navigate to your personal device.
What is CIDR?
Classless Inter-Domain Routing is a method for assigning out IP addresses.
What is the range of IP addresses in:
192.18.65.0/24
192.18.65.0 - 192.18.65.255
