Module 2 - Networking Part #1 (Fall 2021)

Convert the decimal number 255 into binary

11111111

Convert the binary number 0010 0101 into decimal

37

Employees are having trouble sending e-mails. A technician suspects that the firewall may be blocking the port. Which port is the technician looking to verify isn't blocked?

53

You're browsing a website using HTTP. What port are you using?

80

Scenario: Your computer is connected via an ethernet cable to a switch on a LAN with about a dozen other computers. Your computer has the destination IP address but does not know the destination MAC. What does your computer need to do to find out the MAC of the destination device?

ARP

What is an advantage of an OSI layer 2 bridge over a layer 1 hub?

Bridges learn MAC addresses

Convert Decimal 12 into Hexadecimal

C

Complete the following subnet problem. Number of needed subnets 14 Number of needed usable hosts 14Network Address 192.10.10.0

Class-B Custom Subnet Mask-255.255.255.240 Bits Borrowed-4 Usable # of Host-16 Max # of Subnets-32

What type of server supports DORA? In the DORA process a computer requests an IP address, receives an IP address (also a lease time, DNS IP, default gateway...), and accepts or confirms IP address. What server is the computer communicating with to get this IP?

DHCP

Match the server to their role on the network

DHCP-Automates process of giving network devices an IP address DNS-Translates URL to IP address Mail-Manages and controls e-mail operations Authentication-Provides confirmation of username/password for access for resources

Much like adding a new phone number into a contact list requires a unique name be entered for easy identification, this protocol translates IP addresses into human understandable URLs and vice versa for computers to understand.

DNS

A network device that filters data based on ports, protocols, applications, and IP addresses is an example of which of the following? This process is commonly referred to as whitelisting or blacklisting.

Firewall

Which two of the following are true about IPv6?

IPv6 addresses are written in dotted decimal notation. IPv6 offers a greater number of addressing options than IPv4.

Match the following IP address, MAC, subnet mask

MAC(physical address):71-D3-F1-6C-F6 IPv6(128 bit):132.145.0.1 IPv4(32 bit):255.255.0.0 Subnet mask:2001:0db85a

What type of network is small, possibly a single room or small office space and only has one organization admin? This network example has several different computers and a printer connected with all wired connections. (no bluetooth)

MAN

Complete the following subnet problem: Number of needed subnets: 750 Network Address: 190.35.0.0

Network Bits-B Address Class-255.255.0.255 Max # of Host-26 Bits Borrowed-64

What type of network device has a primary function of regenerating a weak signal? (May be wired or wireless)

Repeater

What device delivers data based on IP addresses and interconnects networks by serving as a default gateway?

Router

Which of the following is an advantage of TCP over UDP?

TCP uses acknowledgements to see if PDUs arrived to their destination

You're traveling overseas. You want to watch Netflix but it keeps saying there is a county restriction. You remember about something you learning about in class that allows you to have an IP address from another county. What can you use?

VPN

What network devices allows user to connect using 2.4 GHz and/or 5GHz (IEEE 802.11) wireless technology?

WAP

You're trying to connect your computer to the school's network. Your laptop has the capability to use: Bluetooth 802.11ac Ethernet Your 2.4GHz and 5GHz NIC isn't working but you need to get online. The school library has power strips and RJ-45 ports available for student use. You don't have a cellphone or hotspot. What type of network would allow you to connect to the internet?

WLAN

What advantages does a WLAN have over a LAN? Select all that apply.

WLANs don't require running ethernet cables to each device End user devices have greater mobility and can connect wirelessly to the network

Match the following terms for network types

WWAN-Covers a large geographic area wirelessly, interconnects LANs, multiple organized admins LAN-Small wireless network with one organized admin MAN-Not part of WAN, physical wires, interconnects devices, has one organization admin WLAN-Covers a large geographic area wirelessly, interconnects LANs, multiple organizational admins