Free 98-366 Exam Dumps Preview

FTP is an application layer protocol.

VPN is a network that is constructed by using public wires -- usually the Internet -- to connect to a private network, such as a company's internal network.

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources.

B: Ethernet networks can use coax, twisted-pair, or fibre optic cabling.
C: Ethernet is the most widely used network topology.
E: Speed can be negotiated on Ethernet network.

Incorrect:
not A: Tokes is used in ring topologies. The two possible topologies for Ethernet are bus and star.
Not D: A network topology is not a protocol. Switching can be performed on Ethernet networks.

Cat5e cables support up to 1000BASE-T (Gigabit Ethernet).

Incorrect:
not cat5: Max speed is 100Mbps not Cat6: 20% higher cost than Cat 5e.

References:
https://www.techopedia.com/definition/17478/address-resolution

References:
http://www.subnet-calculator.com/

When used for 10/100/1000BASE-T, the maximum allowed length of a Cat 6 cable is 100 meters or 328 feet.

In network addressing, the host address, or the host ID portion of an IP address, is the portion of the address used to identify hosts (any device requiring a Network Interface Card, such as a PC or networked printer) on the network.

In a (full) mesh network topology, each of the network node, computer and other devices, are interconnected with one another. Every node not only sends its own signals but also relays data from other nodes. In fact a true mesh topology is the one where every node is connected to every other node in the network. This type of topology is very expensive as there are many redundant connections, thus it is not mostly used in computer networks. It is commonly used in wireless networks.

Illustration:

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer.

Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network.
Essentially, it is the topological structure of a network and may be depicted physically or logically.

Used without parameters, netstat displays active TCP connections.

Note: Netstat displays active TCP connections, ports on which the computer is listening, Ethernet statistics, the IP routing table, IPv4 statistics (for the IP, ICMP, TCP, and UDP protocols), and IPv6 statistics (for the IPv6, ICMPv6, TCP over IPv6, and UDP over IPv6 protocols).

Hubs repeat everything they receive and can be used to extend the network.
Switches control the flow of network traffic based on the address information in each packet. A switch learns which devices are connected to its ports (by monitoring the packets it receives), and then forwards on packets to the appropriate port only. This allows simultaneous communication across the switch, improving bandwidth.

Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, let's break mail.google.com into its component parts:

mail is the host or local hostname; and google.com is the domain or parent domain name.

In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection.

A switch begins learning the local MAC addresses as soon as it is connected to other devices or to a network. This learning capability makes switches easy to use on a network.

The switch learning process works like this:

1. As a PC or other networked device sends a frame to another device through the switch, the switch captures the source MAC address of the frame and the interface that received it.
2. The switch confirms or adds the MAC address and the port to the lookup table.

ipconfig
Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings. Used without parameters, ipconfig displays the IP address, subnet mask, and default gateway for all adapters.

Trusted sites
The level of security set for Trusted sites is applied to sites that you have specifically indicated to be ones that you trust not to damage your computer or information.

References:
Change Internet Explorer Security settings

The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical configuration, a local network uses one of the designated "private" IP address subnets (RFC 1918). A router on that network has a private address in that address space. The router is also connected to the Internet with a "public" address assigned by an Internet service provider.

In computing, traceroute (treacert) is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network.

The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical configuration, a local network uses one of the designated "private" IP address subnets (RFC 1918). A router on that network has a private address in that address space. The router is also connected to the Internet with a "public" address assigned by an Internet service provider.

Over the last 10 years 802.11 technology has made remarkable strides -- getting faster, stronger and more scalable. But one problem still haunts Wi-Fi: reliability.

Nothing is more frustrating for network managers than users complaining about flaky Wi-Fi performance, spotty coverage and dropped connections. Dealing with a Wi-Fi environment that you can't see and that is constantly changing is the problem. And radio frequency interference is the culprit.