SANS 401 GSEC Test Bank Questions & Accurate Answers Most
Recent Exam Actual Complete Questions And Correct Answers
(Verified Answers) Already Graded A+ | Guaranteed Success!!
Newest Exam | Just Released!! 2026-2027
Network Layer 3 OSI Stack
Moving packets from one network to another network, uses logical addressing
instead of physical addressing
Data Link Layer 2 OSI Stack
Takes a packet and frames it suitable for transmission
Physical Layer 1 OSI Stack
Network cable, electromagnetic radiation
TCP/IP Protocol Stack (4)
Layer 4) Application
Layer 3) Transport (TCP/UDP)
Layer 2) Internet (IP)
Layer 1) Network
,Network Address in: 10.1.2.0/24 Subnet
10.1.2.0
Broadcast Address in: 10.1.2.0/24 Subnet
10.1.2.255
Class A CIDR Addressing (Mask, IP Range)
N.H.H.H, 255.0.0.0 - 1-127
10.0.0.0/8
16.7 Million IP's
Class B CIDR Addressing (Mask, IP Range)
N.N.H.H, 255.255.0.0 - 128-191
172.16.0.0/16
65,536 IP's
Class C CIDR Addressing (Mask, IP Range)
N.N.N.H, 255.255.255.0 - 192-
223 192.168.1.0/24
256 IP's
Address that broadcasts to current network
255.255.255.255
,ARP (Address Resolution Protocol)
Required to go from Layer 2 to 3, broadcasts to a network querying for an IP
Address, once found, sends it back to requesting MAC
DNS (Domain Name System)
Name to an IP Address (TCP/UDP 53)
Layer 3 Network Protocols
ICMP (Ping and Traceroute)
Layer 4 Transport Protocols
TCP (Connection) and UDP (Connectionless)
3-Way Handshake (TCP)
A: SYN
B: SYN ACK
A: ACK
Closing a TCP Session
A:
FIN
B:
ACK
B:
FIN
A:
, ACK
Sniffer
Program and/or device that monitors data traveling over a network
Bluetooth current Encryption
AES, vulnerabilities in the Application layer
802.11b supports up to
11 Mbps at 2.4 GHz
802.11a supports up to
54 Mbps at 5 GHz
802.11g supports up to
22/54 Mbps at 2.4 GHz
Recent Exam Actual Complete Questions And Correct Answers
(Verified Answers) Already Graded A+ | Guaranteed Success!!
Newest Exam | Just Released!! 2026-2027
Network Layer 3 OSI Stack
Moving packets from one network to another network, uses logical addressing
instead of physical addressing
Data Link Layer 2 OSI Stack
Takes a packet and frames it suitable for transmission
Physical Layer 1 OSI Stack
Network cable, electromagnetic radiation
TCP/IP Protocol Stack (4)
Layer 4) Application
Layer 3) Transport (TCP/UDP)
Layer 2) Internet (IP)
Layer 1) Network
,Network Address in: 10.1.2.0/24 Subnet
10.1.2.0
Broadcast Address in: 10.1.2.0/24 Subnet
10.1.2.255
Class A CIDR Addressing (Mask, IP Range)
N.H.H.H, 255.0.0.0 - 1-127
10.0.0.0/8
16.7 Million IP's
Class B CIDR Addressing (Mask, IP Range)
N.N.H.H, 255.255.0.0 - 128-191
172.16.0.0/16
65,536 IP's
Class C CIDR Addressing (Mask, IP Range)
N.N.N.H, 255.255.255.0 - 192-
223 192.168.1.0/24
256 IP's
Address that broadcasts to current network
255.255.255.255
,ARP (Address Resolution Protocol)
Required to go from Layer 2 to 3, broadcasts to a network querying for an IP
Address, once found, sends it back to requesting MAC
DNS (Domain Name System)
Name to an IP Address (TCP/UDP 53)
Layer 3 Network Protocols
ICMP (Ping and Traceroute)
Layer 4 Transport Protocols
TCP (Connection) and UDP (Connectionless)
3-Way Handshake (TCP)
A: SYN
B: SYN ACK
A: ACK
Closing a TCP Session
A:
FIN
B:
ACK
B:
FIN
A:
, ACK
Sniffer
Program and/or device that monitors data traveling over a network
Bluetooth current Encryption
AES, vulnerabilities in the Application layer
802.11b supports up to
11 Mbps at 2.4 GHz
802.11a supports up to
54 Mbps at 5 GHz
802.11g supports up to
22/54 Mbps at 2.4 GHz
