FREE Microsoft Networking Essentials: Final Course Question and Answers
Which two factors are taken into consideration when choosing a network medium for a network?
Please select 2 correct answers
Explanation:
A network medium should meet the following criteria:
The maximum distance a signal can be carried by the chosen medium in the environment in which it will be deployed.
The quantity of data to be transferred and the required transmission speed
the installation and equipment costs for the medium
The hosts on a network are given IP addresses on a dynamic basis by a DHCP server. The configuration for the address pool is 192.168.10.0/24. On this network, three printers require the use of reserved static IP addresses from the pool. How many IP addresses in the pool are still available for other hosts to be assigned?
Explanation: There are 254 IP addresses that can be given to hosts on the network if the block of addresses allocated to the pool is 192.168.10.0/24. There are 251 IP addresses remaining to assign since 3 printers require their addresses to be assigned statically.
What happens when a tiny wireless router's security mode is set to WEP?
Explanation:
Data between the wireless client and the access point is encrypted using WEP. IP addresses are converted into simple-to-remember domain names by DNS. An internal address or set of addresses is converted into an external, public address through NAT. The access point can alert clients to its presence using an SSID.
What is an SSID broadcasting security flaw that is inherently present?
Explanation:
Because an attacker can simply intercept wireless signals and read plain text messages, wireless routers, and access points by default broadcast SSIDs in plain text to all PCs within the wireless range.
To communicate over the network, a client device on an Ethernet segment requires an IP address. On the network, a DHCP server with the IP address 192.168.1.1 has been set up and activated. How can a client device get an IP address that works on this network?
Explanation:
Similar to IP addressing, a unique MAC address called FF-FF-FF-FF-FF-FF is also used for broadcasting. This MAC address will be used as the destination MAC address in the Ethernet frame when a DHCP client has to send a DHCP Discover message to look for DHCP servers. It does this because it is unaware of the DHCP servers' MAC and IP addresses.
In the course of encapsulation, at which layer of the OSI model would a logical address be added?
Explanation:
At the network layer, logical addresses—also known as IP addresses—are introduced. At the data link layer are included physical addresses. The transport layer is where port addresses are added. A physical layer address addition is not made.
Which solution permits only internal FTP servers on private networks to be accessed by external users?
Explanation:
By using port forwarding, it is possible for other users to access devices connected to a private network over the Internet. Based on the port number, the firewall in the router decides if the traffic needs to be forwarded to an internal device. Port numbers are connected to particular services, including FTP, HTTP, HTTPS, and POP3.