Network Devices Flashcards
What is a computer network?
A computer network is a digital telecommunications network which allows nodes to share resources.
What is a router?
A device that provides WiFi and its typically connected to a modem. It sends information from the internet to a computer, phones, and tablets, and any other wifi capability devices
what is network switch?
A network switch connects devices within a network through Ethernet. To forward traffi within a LAN
What is a firewall or Host based firewall?
Firewalls are essential components of network security, helping to protect against unauthorized access, cyberattacks, malware, and other threats
what is a server?
A server is a computer or system that provides resources, data, services, or programs to other computers, known as clients, over a network
What is another name for servers and clients?
End hosts or endpoints
True or False: 2 computers connected together make a network
True
What are examples types of network clients?
laptop, pc running windows, macbook running Os, iphone running iOS
what is a client?
A device that accesses a service made available by a server
what is a host?
the term host can refer to any type of network node
What does LAN stand for?
Local Area Network. It is not a network device itself
what is a next-generation firewall?
It combines traditional firewall features and also includes additional features like application awareness and control, integrated intrusion prevention, and cloud-delivered threat intelligence
What does CLI stand for?
Command Line Interface
What does IP stand for?
Internet protocol
What does IEEE stand for?
Institute of Electrical and Electronics Engineer
What does UTP stand for?
Unshielded Twisted Pair
What does EMI stand for?
Electromagnetic interference
How many wires does 10Base-t (Ethernet) and 100Base-t (Fast Ethernet) use?
2 pairs ( 4 wires )
How many wires does 1000Base-t (GB Ethernet) and 10GBase-t (10 Gig Ethernet) use?
4 pairs ( 8 wires )
What Is a Straight Through Cable?
A straight through cable is a type of twisted pair cable that is used in local area networks to connect a computer to a network hub such as a router. On a straight through cable, the wired pins match
what is a Cross Over Cable?
crossover cable is a network cable used to connect two Ethernet network devices directly, such as two computers without a switch or router in between.
what is SFP transceiver?
Small Form-Factor Pluggable Transmitter
what is fiber optic cable?
Network cable that contains strands of glass fibers inside an insulated casing. They’re designed for long-distance, high-performance data networking, and telecommunications. These cable send light through glass over glass fibers
which pins does PC transmit data on?
Pins 1 and 2
which pins does PC receive data?
Pins 3 and 6
which pins does a server transmit on?
Pins 3 and 6
which pins does a server receive data on?
Pins 1 and 2
which pins does a router trasmit on?
Pins 1 and 2
which pins does a router receive on?
Pins 3 and 6
what are some characteristics of firewalls?
- They monitor and control network traffic based on configured rules.
-You can configure which network traffic should be allowed in your network and which should not.
-Can be Placed inside or outside the network meaning the firewall can filter traffic before it reaches the router or after it has passed through the router.
What are examples of Cisco Next Gen Firewalls?
ASA-5500X and Firepower 2100
What are network firewalls?
Hardware devices and filter traffic between networks
What are Host-based firewalls?
Software application that filter traffic entering and exiting a host machine like a PC
True or False: All PCs have firewalls installed
true
You company wants to purchase some network hardware to which they can plug the 30 PCs in your department. Which type of network device is appropriate?
A. a router
B. a firewall
C. a switch
D. a server
C- Switch
You received a video file from your friends apple iphone using airdrop. What was his iphone functioning as in that transaction?
A. a server
B. a client
C. a local area network
A. a server
what is your computer or smartphone functioning as while you watch a video?
A. a server
B. an end house
C. a client
C. a client
Your company wants to purchase some network hardware to connect its separate networks together. What kind of network device is appropriate?
A. a firewall
B. a host
C. a LAN
D. a router
D. a router
what is an Ethernet?
A wired technology that connects devices in a network using cables. Commonly Used for LAN and WAN
What is a bit?
A bit (binary digit) is the smallest unit of data that a computer can process and store. The state is represented by a single binary value, usually a 0 or 1
What is a byte?
A byte is a unit of data in computer science that is made up of eight binary digits, or bits. 8 bits = 1 byte
True or False: Speed is measured in bytes per second, not bits per second
False. Its measured in bits per second like Kbps, Mbps, Gbps, and Tbps
how is data measured in a hard drive?
bytes per second.
1 kilobit (Kb) is equal to?
1000 bits (1 thousand)
1 megabit (Mb) is equal to?
1,000,000 bits (1 million)
1 gigabit (Gb) is equal to?
1,000,000,000 bits (1 billion)
1 terabit (Tb) is equal to?
1,000,000,000,000 bits (1 trillion)
what does UTP stand for?
unshielded twisted pair
why are the copper wire twisted in an ethernet cord?
to protect against EMI (electromagnetic interference)
what does SFP stand for?
Small Form-Factor Pluggable Transceiver
What is the longest distance that UTP supports?
100 Meters
True or False: Single Mode Fiber is more expensive than multi mode fiber
True
What is the longest distance that multi-mode fiber supports?
over 150 meters to around 550 meters
what is a networking model?
networking models categorize and provide a structure for networking protocols and standards
what does OSI Model stand for?
Open Systems Interconnection model
