Essential Terms and Components Flashcards
What is a set of devices, software and cables that enables the exchange of communication between the devices?
Networks
What is a computer, server laptop tablet, smartphone or anything that a person uses to access the network?
End Device
What are hubs, repeaters, bridges, switches, routers and firewalls?
Network Devices
What describes the layout of a network?
Topology
What topology is the connection of one device to another?
Point-to-Point
What topology has one device that has multiple connections to other hosts?
Star
What topology has devices connected in a circle?
Ring
What topology uses one coaxial cable and connects multiple devices to it?
Bus
What topology uses point-to-point to connect multiple locations to other locations?
Mesh
What is a short-range, high-speed networks typically found in schools, offices and homes?
Local Area Network (LAN)
What protocol is used to deal with ethernet collisions?
CSMA/CD
What is a group of devices that are affected by one another’s collisions?
Collision Domain
What means there are no collisions in a network because every segment has only one sender and receiver?
Microsegmented
What type of network is used to connected two or more networks?
Wide Area Network (WAN)
What type of WAN connection refers to a connection that is installed and provisioned for the exclusive use of the customer?
Dedicated Leased-Line Connection
What type of WAN uses a phone company as the service provider?
Circuit-Switched Connection
What type of WAN connects you to the provider;s network like a PC connects to a hub.
Packet-Switched Connection
What Ethernet implementation is 10Mbs, half duplex, has max range of 500m and thicknet?
802.3/10BASE-5
What Ethernet implementation is 10Mbs, half duplex, has max range of 185m and thinnet?
802.3/10BASE-2
What Ethernet implementation is 10/100Mbs, half duplex, has max range of 100m and UTP?
802.3/10/100-BASE T
What Ethernet implementation is 100Mbs, half/full duplex, has max range of 100m and UTP?
802.3u/100-BASE T
What Ethernet implementation is 100Mbs, full duplex, has max range of 400m and multimode fiber optic?
802.3u/100-BASE FX
What Ethernet implementation is 1000Mbs, full duplex, has max range of 100m and UTP?
802.3ab/1000-BASE T
What Ethernet implementation is 1000Mbs, full duplex, has max range of 400m and single-mode fiber optic?
802.3z/1000-BASE ZX
What are the 7 layers of the OSI model?
- Application
- Presentation
- Session
- Transport
- Network
- Data Link
- Physical
For TCP, what indicates how many segments can be sent before an ack will be sent?
Sliding Window
What port and protocol does FTP use?
20 and 21; TCP
What port and protocol does Telnet use?
23; TCP
What port and protocol does SMTP use?
25; TCP
What port and protocol does DNS use?
53; TCP and UDP
What port and protocol does HTTP use?
80; TCP
What port and protocol does POP use?
110; TCP
What port and protocol does NNTP use?
119; TCP
What port and protocol does HTTPS use?
443; TCP
What port and protocol does DHCP use?
67 and 68; UDP
What port and protocol does TFTP use?
69; UDP
What port and protocol does NTP use?
123; UDP
What port and protocol does SNMP use?
161; UDP
What layer 3 protocol uses routable 32-bit addressing?
IP
What layer 3 protocol incorporates ping and traceroute?
ICMP
What layer 3 protocol is used to learn MAC address associated to a particular IP address
ARP
What type of cable is used to connect other devices to a switch or hub?
Straight-Through Cable
What type of cable is used to connect like devices together and routers to end devices?
Crossover Cable
What is the default serial port encapsulation protocol?
HDLC
What show command will display details about routers around you including the IP address?
show cdp neighbors detail
What protocol has the tools PING and Traceroute?
ICMP (Internet Control Message Protocol)
What protocol syncs the time settings of network devices?
NTP (Network Time Protocol)
What protocol monitors network devices for conditions that require admin attention?
SNMP (Simple Network Management Protocol)
What is the measure of a routes trustworthiness?
Administrative Distence
What is the variable used to make decisions on which route to take?
Metric
What is the formula for the OSPF cost metric?
100,000,000 / Bandwidth