2.0 Infrastructure Flashcards
what connector would you use with RS-232?
DB-9
what is the maximum recommended speed for CAT 6 cable?
10 Gbps
what is the maximum distance of a CAT 5e cable run?
100 meters
maximum recommended speed for CAT 5e cable?
1000 Mbps
what is the line that marks the point where responsibility for a communication link shifts from a telecommunications company to the customer?
Demarc
which WAN protocol uses labels to identify paths?
MPLS (multiprotocol label switching)
what WAN media has the highest latency?
Satellites
what type of multiplexing does and ISDN PRI use?
time division multiplexing
ISDN (integrated services digital network)
PRI (primary rate interface)
what WAN protocol uses virtual circuits over private or semi-private lines?
Frame relay
what type of information can be sent over a single broadband line?
data, video, and voice
it sends the different types of data on a single line using frequency division multiplexing (FDM)
where is a virtual switch used?
in a virtual network
what type of storage does a SAN use?
Block-level storage
what is a drawback of a SAN when compared to NAS?
It is more expensive and requires more configuration
what type of data storage can be accessed over a traditional TCP/IP network?
NAS
what is the MTU of a jumbo frame?
Greater than 1,500 bytes but not greater than 9,000 bytes
what will raise an alarm about a network attack, while also stopping it?
IPS
what will raise an alarm about a network attack, but not necessarily stop it?
IDS
what appliance can filter access to objectionable web sites and improve performance of internet access?
Proxy server
what appliance would be used to block access to objectionable web sites?
content filter (or proxy server)
some advanced firewalls also include a content filter
what appliance would be used to connect two sites together over the internet?
VPN concentrator
what appliance is used to ensure multiple servers have an equal amount of traffic?
load balancer
what does a load balancer provide?
increased availability and distribution of network requests
what device can reduce overall bandwidth usage by serving cached copies of website pages?
Proxy server
what can RADIUS provide for an 802.11 network?
centralized authentication
what is used to filter traffic based on IP addresses for a network?
Network-based firewall
A stateless firewall filtering traffic based on IP addresses (or ports) is configured in an access control list (ACL)
what network device is typically placed on the border of a network?
A firewall
what type of modem would you use to access the internet via a TV cable?
DOCSIS modem
DOCSIS (data over cable service interface specification)
what network device is typically used to perform stateful inspection of incoming traffic?
A firewall
what type of connector is used with coaxial cable?
BNC
what type of connector is used with a phone line?
RJ-11
what type of connector is used with RG-6 cable?
F-connector
what type of connector is used with twisted pair cable?
RJ-45
what type of connectors are used with fiber?
ST, SC, LC, MTRJ
what do you use to plug a fiber optic cable into an RJ-45 jack?
Media converter (or transceiver)
a small form-factor pluggable (SFP) transceiver is often used on switches
what cable type provides the best protection against EMI?
Fiber
what type of twisted pair cable protects against EMI?
STP (shielded twisted pair)
what type of cable is used by MMF?
Fiber
MMF (multimode fiber)
what type of cable would be used for 1000BaseLX?
SMF (single mode fiber)
note that the LX indicates longer distances and SMF is used for longer distances
what type of cable would be used for 1000BaseSX?
MMF
Note that the S in SX indicates shorter distances and MMF is used for shorter runs
what type of cable would you use to comply with fire codes when running cables under a raised floor?
Plenum-rated
what type of fiber connector is round and twists on with a spring-loaded bayonet mount?
ST (standard/straight tip)
what type of fiber connector is square and snaps on?
LC
what type of connector would you use to connect to a server’s serial port?
DB-9
what type of cable would you use to connect a computer’s NIC to a switch?
A straight-through cable.
In general, when auto sensing is not available or not enabled, you would use a straight-through cable for the following connections: PC to Switch. Switch to Router
what would you use to connect two older switches together?
A crossover cable.
an older switch implies that autosensing is not enabled.
when autosensing is not enabled, you would use a crossover cable for the following connections:
Switch to Switch. Router to Router. PC to Router
