GSEC GIAC Security Essentials Exam Questions Complete
Solutions A+
What class is the address 170.19.82.45? - Answer B
In the address ab00:fc87:234a:0090:5120:ffab:bc8a:0098/23, what does the /23
indicate? - Answer The number of bits in the network portion of the address
How many bits are in the NETWORK portion of the following address block:
Address: 10.1.0.0
Subnet: 255.255.255.224 - Answer 27
Question 4
What can you say about the following packet capture?
14:18:25.906002 apollo.it.luc.edu.1000 > x-terminal.shell: S
1382726990:1382726990(0) win 4096
14:18:26.094731 x-terminal.shell > apollo.it.luc.edu.1000: S
2021824000:2021824000(0) ack 1382726991 win 4096
14:18:26.172394 apollo.it.luc.edu.1000 > x-terminal.shell: R
1382726991:1382726991(0) win 0
14:18:26.507560 apollo.it.luc.edu.999 > x-terminal.shell: S
1382726991:1382726991(0) win 4096
14:18:26.694691 x-terminal.shell > apollo.it.luc.edu.999: S
2021952000:2021952000(0) ack 1382726992 win 4096
14:18:26.775037 apollo.it.luc.edu.999 > x-terminal.shell: R
1382726992:1382726992(0) win 0
, 14:18:26.775395 apollo.it.luc.edu.999 > x-terminal.shell: R
1382726992:1382726992(0) win 0
14:18:27.174846 x-terminal.shell > apollo.it.luc.edu.998: S
2022080000:2022080000(0) ack 1382726993 win 4096 - Answer This is a sequence
number prediction attack.
In the network 192.168.5.0/23, what would be the broadcast address? - Answer
192.168.5.255
If you see the IP address fe80::0050:8790:4554:2300/16, what does the :: indicate? -
Answer There are 0s between the ::.
Using the following IP header, what is the destination IP address:
45 00 03 3D 1E EB 40 00 40 06 5D E8 C0 A8 01 16 AD C2 4B 67 - Answer 173.194.75.103
What is the sequence of messages in a three-way handshake? - Answer SYN, SYN/ACK,
ACK
Which utility makes use of ICMP to function? -Answer traceroute
Which of the following is a private address (RFC1918)? - Answer 10.45.60.10
When you are deploying an intrusion prevention system on your network, what
is the most important criterion? -Answer It has a low latency
A good example of a network using a mesh topology is: -Answer The Internet
Which of the following security controls would a border router implement? - Answer
Access control lists to block broad categories of traffic.
Solutions A+
What class is the address 170.19.82.45? - Answer B
In the address ab00:fc87:234a:0090:5120:ffab:bc8a:0098/23, what does the /23
indicate? - Answer The number of bits in the network portion of the address
How many bits are in the NETWORK portion of the following address block:
Address: 10.1.0.0
Subnet: 255.255.255.224 - Answer 27
Question 4
What can you say about the following packet capture?
14:18:25.906002 apollo.it.luc.edu.1000 > x-terminal.shell: S
1382726990:1382726990(0) win 4096
14:18:26.094731 x-terminal.shell > apollo.it.luc.edu.1000: S
2021824000:2021824000(0) ack 1382726991 win 4096
14:18:26.172394 apollo.it.luc.edu.1000 > x-terminal.shell: R
1382726991:1382726991(0) win 0
14:18:26.507560 apollo.it.luc.edu.999 > x-terminal.shell: S
1382726991:1382726991(0) win 4096
14:18:26.694691 x-terminal.shell > apollo.it.luc.edu.999: S
2021952000:2021952000(0) ack 1382726992 win 4096
14:18:26.775037 apollo.it.luc.edu.999 > x-terminal.shell: R
1382726992:1382726992(0) win 0
, 14:18:26.775395 apollo.it.luc.edu.999 > x-terminal.shell: R
1382726992:1382726992(0) win 0
14:18:27.174846 x-terminal.shell > apollo.it.luc.edu.998: S
2022080000:2022080000(0) ack 1382726993 win 4096 - Answer This is a sequence
number prediction attack.
In the network 192.168.5.0/23, what would be the broadcast address? - Answer
192.168.5.255
If you see the IP address fe80::0050:8790:4554:2300/16, what does the :: indicate? -
Answer There are 0s between the ::.
Using the following IP header, what is the destination IP address:
45 00 03 3D 1E EB 40 00 40 06 5D E8 C0 A8 01 16 AD C2 4B 67 - Answer 173.194.75.103
What is the sequence of messages in a three-way handshake? - Answer SYN, SYN/ACK,
ACK
Which utility makes use of ICMP to function? -Answer traceroute
Which of the following is a private address (RFC1918)? - Answer 10.45.60.10
When you are deploying an intrusion prevention system on your network, what
is the most important criterion? -Answer It has a low latency
A good example of a network using a mesh topology is: -Answer The Internet
Which of the following security controls would a border router implement? - Answer
Access control lists to block broad categories of traffic.
