FBLA COMP CPU SCI: Networking Concepts & the Internet:1:@1
-This device sends and receives information about the Network layer
-This device can measure the distance to a remote network
-a networking device that forwards data packets between computer networks
-perform the traffic directing functions on the Internet (breaks up collision domains
Router
-The layer that creates a virtual circuit before transmitting between two end stations
-This layer supports flow control and sequencing
Transport
-This device uses hardware addresses to filter a network
-This device creates many smaller collision domains, but the network is still one large broadcast domain
Bridge or Switch
Logical addressing is used at this layer
Network
Hardware addresses are defined at this layer
Data Link (Mac Sublayer)
-This device creates one big collision domain and one large broadcast domain
-a common connection point for devices in a network
-devices commonly used to connect segments of a LAN
-A network device used to connect several computers to a network. Commonly used in a twisted-pair LAN. A cable runs from each computer's NIC to the hub. The hub is often connected to a router.
-create one collision domain and one broadcast domain
-A physical star topology consists of several workstations that branch off a central device
Hub
Which device is used to segment a network?
A switch.
Hubs don't segment a network; they just connect network segments together. Repeaters don't segment the network; they repeat a signal and allow the distance covered to be increased.
Which device is used to segment a network?
A switch.
Hubs don't segment a network; they just connect network segments together. Repeaters don't segment the network; they repeat a signal and allow the distance covered to be increased.
Which of the following devices can work at both Layers 2 and 3 of the OSI model?
A switch is typically just a Layer 2 device segmenting the network by using MAC addresses. However, some higher‐end switches can provide Layer 3 services
What is an advantage of using DHCP in a network environment?
Remember that DHCP servers assign IP addresses to hosts. Thus DHCP allows easier administration than providing IP information to each host by hand (called static IP addressing).
Which device should be used if you need to send incoming packets to one or more machines that are hidden behind a single IP address?
A load balancer uses a little trickery and sends incoming packets to one or more machines that are hidden behind a single IP address. Modern load-balancing routers can use different rules to make decisions about where to route traffic, which can be based on least load, fastest response times, or simply balancing requests.
What role does the "A" record in a Domain Name Service (DNS) server have in your network?
DNS translates human names to IP addresses for routing your packet through the Internet.
What is the most common use for a web proxy?
Web cache, of course! Most proxy programs provide a means to deny access to certain URLs in a blacklist, thus providing content filtering, usually in corporate environments.
Which is not an advantage of network segmentation?
The first 3 options all aid in boosting network performance, so the only option left is broadcast storms. Increased traffic will increase LAN congestion
Which device creates separate collision domains and a single broadcast domain?
Switches create separate collision domains, but a single broadcast domain. Remember that routers provide a separate broadcast domain for each interface.
Which device by default does not forward any broadcast or multicast packets?
Routers don't forward any broadcast or multicast packets by default, but they do have plenty of other functions like using the logical address, using access lists, and providing Layer 2 bridging functions.
Which type of server in your network uses pointer and A records?
A DNS server uses many types of records. An "A" record is a hostname to IP address record and a pointer record is an IP address to hostname record.
Users on your network are saturating your bandwidth because they are using too many nonwork related sites. What device would limit the availability of the types of sites that users on a LAN have access to while providing granular control over the traffic between the local LAN and the Internet?
A proxy server can provide many functions. A proxy server can use a caching engine so repeated access request for web information would accelerate repeated access for users, and they can also limit the availability of web sites.
Which network operating system was developed from the VMS platform?
Windows NT
Which operating system was originally developed by Bell Labs and has multitasking, multiuser, and built in networking capabilities?
UNIX
Which of the following are network operating systems and not simply operating systems that will communicate on a network?
Novell NetWare
What do networks use to communicate with each other that is sometimes known as a language that networked computers use?
Protocol