Security Foundations - D481 OA Exam 2024.

Security Foundations - D481 OA Exam 2024. File Transfer Protocol (FTP) 20/21 TCP Secure Shell (SSH) 22 TCP Telnet 23 TCP SMTP - Simple Mail Transfer Protocol is used to send email over the internet 25 TCP DNS - Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames 53 TCP/UDP DHCP - Dynamic Host Configuration Protocol. Auto config. of IP address, subnet mask & other options. Requires a DHCP server, and appliance integrated into a SOHO router. Server to Client - Sends Message 67 UDP DHCP - Dynamic Host Configuration Protocol. Auto config. of IP address, subnet mask & other options. Requires a DHCP server, and appliance integrated into a SOHO router. Client to Server - Receives Message 68 UDP TFTP - Trivial FTP is used as a simplified version of FTP to put a file on a remote host, or get a file from a remote host 69 UDP Finger protocol (user information) 79 TCP HyperText Transfer Protocol (HTTP) (browsing websites) 80 TCP Kerberos 88 UDP POP3 - Post Office Protocol v3 is used to receive email from a mail server 110 TCP IMAP - Internet Message Access Protocol is used to receive email from a mail server with more features than POP3 143 TCP Hypertext Transfer Protocol Secure (HTTPS) 443 TCP Lightweight Directory Access Protocol (LDAP) 389 TCP/UDP Lightweight Directory Access Protocol Secure (LDAPS) 636 TCP/UDP Security Foundations - D481 OA Exam 2024 Remote Desktop Protocol (RDP) 3389 TCP/UDP How are analog transmissions waves measured which is the number of cycles per second that's measured? Frequency (also called hertz) A Physical Layer device that converts an Ethernet signal from, for example, fiber optic to copper transmission media Media converter 1-green/white, 2-green, 3-orange/white, 6-orange TIA-568A Wiring Pin Colors 1- orange/white, 2-orange, 3-green/white, 6-green TIA-568B Wiring Pin Colors Backbone that's more restrictive because they must rely on physical device location to isolate departmental LANs from one another Flat backbone Minimizes traffic flowing between departmental LANs by replacing a bus with one or more central switches Collapsed backbone When an IP receives a packet from a higher layer and adds additional data in a new IP header to the packet Encapsulation What is this drawbacks of? Fiber optic cabling is required to connect each departmental LAN to the central switch The central switch represents a single point of failure. If the switch fails, no traffic can travel between departmental LANs Drawbacks of a Collapsed backbone when IP software chops packets into smaller packets Fragmentation First three octets in an IPv4 address are what? Network ID The last octet in an IPv4 address is what? Host ID Translates the source IP address usually when connecting from a private to a public IP address. Used when an internal/private host needs to initiate a connection to an external/public host. Source Network Address Translation (SNAT) Maps internal IP addresses to public or external IP addresses. Allows one to share a single, public-facing IP address with a range of internal , private IP host addresses Port Network Address Translation (PAT): You may omit any leading zeros within any group of hexadecimal digits. You may replace only one grouping of two or more consecutive groupings of zeros in an address with a double colon How to shorten an IPv6 Address IPv6 methodology to send packets that sends a packet to a single destination Unicast IPv6 methodology to send packets that sends a packet to the nearest node in a specified group of nodes Anycast IPv6 methodology to send packets that sends a packet to multiple destinations Muilicast What is the best principle to use when enabling ports needed when considering security Use deny-all principle and only enable ports as needed Name three additional software functions switches have Clustering Port security Flood guard Which ports are unencrypted? HTTP (80) FTP (20/21) Telnet (23) POPS (110) IMAP (143) SMTP (25) LDAP (389) Collection of all nodes that are connected to the same set of repeaters, hubs, switches, and bridges. Broadcast domain The collection of nodes that exchange unfiltered traffic with other nodes. These are separated by ports and each VLAN is a different collision domain Collision domain What are these IPv4 Addresses? 10.0.0.0 to 10.255.255.255 172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255 Ranges of private IPv4 addresses.