CREST CPSA
Name all OSI layers - Application, Presentation, Session, Transport, Network, Data Link, Physical.
Name all TCP/IP layers - Application, Transport, internet, Network Access.
Name Four TCP head flags - ACK, FIN, SYN, URG, PSH, RST
Which layer does HTTP protocl reside in the OSI model. - Layer 7, Application.
Which layer does Ethernet reside in the OSI model. - Layer 2, Data link.
Which Layer does IPv4 & IPv6 reside in TCP/IP model. - Layer 4, transport.
RFC 1918 addresses - 10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Name the well know, registered and dynamic port ranges. - Well Known(0-1023), Registed(1024-49,151)
& Dynamic(49,152-65,535)
What is an ephemeral port? - An ephemeral port is a short-lived transport protocol port for Internet
Protocol (IP) communications. Can be used by both TCP & UDP.
What does IANA stand for? - Internet Assigned Numbers Authority
, Name 10 common ports and there protocols. - FTP21, SSH22, DHCP67(C), DHCP68(S), NTP123,
MYSQL3306, RDP3389, HTTP80, HTTPS443, SMB445, KERBEROS88, CHARGEN19(UDP), DNS53, TACAS49,
WHOIS43, MSSQL1433, HIDDEN MSSQL2433.
Name five network types. - LAN, WAN, MAN, VLAN, WLAN, PAN.
Name five network topologies - Mesh, Ring, star, Tree, Bus.
Name five common ethernet and FDDI cable types. - 100Base5, 10Base2, 10BaseT, 100Base-FL,
1000Base-T.
What is WIFI the alias for? - IEEE 802.11
What does VLAN stand for? - Virtual Local Area Network
How does VLAN work? - Virtual Local Area Networks (VLANs) separate an existing physical network into
multiple logical networks.
Thus, each VLAN creates its own broadcast domain. Communication between two VLANs can only occur
through a router that is connected to both.
Name five common ICMP types. - 8-echo, 0-echo reply, 30-trace route, 5-redirect, 3-destination
unreachable, 11, time execeed.
What does ICMP stand for? - Internet Control Message Protocol
What does TTL stand for? - Time to Live
Name all OSI layers - Application, Presentation, Session, Transport, Network, Data Link, Physical.
Name all TCP/IP layers - Application, Transport, internet, Network Access.
Name Four TCP head flags - ACK, FIN, SYN, URG, PSH, RST
Which layer does HTTP protocl reside in the OSI model. - Layer 7, Application.
Which layer does Ethernet reside in the OSI model. - Layer 2, Data link.
Which Layer does IPv4 & IPv6 reside in TCP/IP model. - Layer 4, transport.
RFC 1918 addresses - 10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Name the well know, registered and dynamic port ranges. - Well Known(0-1023), Registed(1024-49,151)
& Dynamic(49,152-65,535)
What is an ephemeral port? - An ephemeral port is a short-lived transport protocol port for Internet
Protocol (IP) communications. Can be used by both TCP & UDP.
What does IANA stand for? - Internet Assigned Numbers Authority
, Name 10 common ports and there protocols. - FTP21, SSH22, DHCP67(C), DHCP68(S), NTP123,
MYSQL3306, RDP3389, HTTP80, HTTPS443, SMB445, KERBEROS88, CHARGEN19(UDP), DNS53, TACAS49,
WHOIS43, MSSQL1433, HIDDEN MSSQL2433.
Name five network types. - LAN, WAN, MAN, VLAN, WLAN, PAN.
Name five network topologies - Mesh, Ring, star, Tree, Bus.
Name five common ethernet and FDDI cable types. - 100Base5, 10Base2, 10BaseT, 100Base-FL,
1000Base-T.
What is WIFI the alias for? - IEEE 802.11
What does VLAN stand for? - Virtual Local Area Network
How does VLAN work? - Virtual Local Area Networks (VLANs) separate an existing physical network into
multiple logical networks.
Thus, each VLAN creates its own broadcast domain. Communication between two VLANs can only occur
through a router that is connected to both.
Name five common ICMP types. - 8-echo, 0-echo reply, 30-trace route, 5-redirect, 3-destination
unreachable, 11, time execeed.
What does ICMP stand for? - Internet Control Message Protocol
What does TTL stand for? - Time to Live
