GSEC Exam Study Questions with Verified
Correct Answers
What are the layers of the OSI Model from top to bottom?
Application, Presentation, Session, Transport, Network, Data Link and Physical
What are the layers of the TCP/IP Model from top to bottom?
Application, Transport, Internet and Link Layer
What is the address space used for loopback addressing?
127.0.0.0 - 127.255.255.255
What is the address space used when a DHCP server is not available?
169.254.0.1 - 169.254.255.255
What are the private IP ranges?
10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, 192.168.0.0 - 192.168.255.255
What protocols are used in the Data Link Layer?
Ethernet, Point to Point Protocol (PPP) and ADCCP (Advanced Data Communication
Control Protocol)
What protocols is utilized in the Network Layer?
Internet Protocol (IP)
What protocols are utilized in the Transport Layer?
UDP and TCP
What protocols are utilized on the Session Layer?
,NetBIOS
What types of formats are used at the presentation layer?
XML and JPEG
What layer of the OSI model does encrypting and decrypting take place?
Presentation Layer
What protocols are utilized at the Application Layer?
SMTP, IMAP, POP, NTP and HTTP
What protocols are utilized inside the Link Layer?
Ethernet
What layers does the Link layer correspond to in the OSI Model?
Physical and Data Link
What protocols are utilized inside the Internet layer?
Internet Protocol (IP)
What protocols are utilized inside the Transport layer of the TCP/IP Model??
TCP and UDP
What protocols are utilized within the Application Layer of the TCP/IP model?
Telnet, Simple Network Management Protocol (SNMP), HTML, LDAP, FTP, SSH
What layers of the OSI Model comprise the TCP/IP layers Application Layer?
Session, Presentation and Application
What protocol is a support protocol within the TCP/IP Suite?
, Internet Control Message Protocol (ICMP)
What range is the Class A IP Range?
0.0.0.0-127.255.255.255
What range is the Class B IP Range?
128.0.0.0-191.255.255.255
What range is the Class C IP Range?
192.0.0.0-223.255.255.255
What range is the Class D IP Range?
224.0.0.0-239.255.255.255
What range is the Class E IP Range?
240.0.0.0 - 254.255.255.255
Name some physical network topologies.
Bus, Star, Rings, Star-Bus Hybrid, Mesh
What network model uses a lot of cable because you need to use home runs back to the
switch or hub?
Star
In general peer-to-peer networks are often?
Mesh Networks
TOR is a peer-to-peer network that provides anonymity for its users by doing what?
Masking the original source IP address from the destination
Correct Answers
What are the layers of the OSI Model from top to bottom?
Application, Presentation, Session, Transport, Network, Data Link and Physical
What are the layers of the TCP/IP Model from top to bottom?
Application, Transport, Internet and Link Layer
What is the address space used for loopback addressing?
127.0.0.0 - 127.255.255.255
What is the address space used when a DHCP server is not available?
169.254.0.1 - 169.254.255.255
What are the private IP ranges?
10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, 192.168.0.0 - 192.168.255.255
What protocols are used in the Data Link Layer?
Ethernet, Point to Point Protocol (PPP) and ADCCP (Advanced Data Communication
Control Protocol)
What protocols is utilized in the Network Layer?
Internet Protocol (IP)
What protocols are utilized in the Transport Layer?
UDP and TCP
What protocols are utilized on the Session Layer?
,NetBIOS
What types of formats are used at the presentation layer?
XML and JPEG
What layer of the OSI model does encrypting and decrypting take place?
Presentation Layer
What protocols are utilized at the Application Layer?
SMTP, IMAP, POP, NTP and HTTP
What protocols are utilized inside the Link Layer?
Ethernet
What layers does the Link layer correspond to in the OSI Model?
Physical and Data Link
What protocols are utilized inside the Internet layer?
Internet Protocol (IP)
What protocols are utilized inside the Transport layer of the TCP/IP Model??
TCP and UDP
What protocols are utilized within the Application Layer of the TCP/IP model?
Telnet, Simple Network Management Protocol (SNMP), HTML, LDAP, FTP, SSH
What layers of the OSI Model comprise the TCP/IP layers Application Layer?
Session, Presentation and Application
What protocol is a support protocol within the TCP/IP Suite?
, Internet Control Message Protocol (ICMP)
What range is the Class A IP Range?
0.0.0.0-127.255.255.255
What range is the Class B IP Range?
128.0.0.0-191.255.255.255
What range is the Class C IP Range?
192.0.0.0-223.255.255.255
What range is the Class D IP Range?
224.0.0.0-239.255.255.255
What range is the Class E IP Range?
240.0.0.0 - 254.255.255.255
Name some physical network topologies.
Bus, Star, Rings, Star-Bus Hybrid, Mesh
What network model uses a lot of cable because you need to use home runs back to the
switch or hub?
Star
In general peer-to-peer networks are often?
Mesh Networks
TOR is a peer-to-peer network that provides anonymity for its users by doing what?
Masking the original source IP address from the destination
