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| Section | Objectives |
|---|---|
| Topic 1: Network Security | - Firewalls (iptables, nftables) - Secure network services - VPN technologies |
| Topic 2: Security Administration | - Authentication mechanisms - System hardening |
| Topic 3: Application Security | - Container and service security - Secure software configuration |
| Topic 4: Access Control | - Discretionary Access Control (DAC) - Mandatory Access Control (MAC) - SELinux and AppArmor |
| Topic 5: Cryptography | - OpenSSL usage and configuration - Public key infrastructure (PKI) - Data encryption and signing |
| Topic 6: Vulnerability Assessment and Monitoring | - Intrusion detection systems (IDS) - Log analysis and auditing |
1. Which of the following statements is used in a parameter file for setkey in order to create a new SPD entry?
A) spdadd
B) addspd
C) spd
D) spdnew
E) newspd
2. In an IPsec implementation using strongSwan, what is the purpose of the Internet Key Exchange (IKE) protocol?
A) To compress IPsec traffic before encryption.
B) To negotiate and establish the Security Associations (SAs) and cryptographic keys used by IPsec.
C) To route IPsec packets across the internet.
D) To encrypt the actual data payload of IPsec traffic.
3. What is the purpose of AIDE?
A) To automate host scans
B) To manage installed packages
C) To manage system log files
D) To detect intrusions and system changes
4. What is the purpose of a Certificate Revocation List (CRL)?
A) It lists all valid certificates currently trusted by a client.
B) It lists certificates that have been revoked by the issuing CA before their expiration date.
C) It lists certificates that have not yet been issued.
D) It replaces the need for certificate expiration dates.
5. Which of the following commands changes the source IP address to 192.0.2.11 for all IPv4 packets which go through the network interface eth0?
A) iptables ~t nat ~A POSTROUTING ~i eth0 ~j DNAT --to~source 192.0.2.11
B) iptables ~t mangle ~A POSTROUTING ~i eth0 ~j SNAT -to~source 192.0.2.11
C) iptables ~t nat ~A PREROUTING ~i eth0 ~j SNAT --to~source 192.0.2.11
D) iptables ~t mangle ~A POSTROUTING ~0 eth0 ~j SNAT -to~source 192.0.2.11
E) iptables ~t nat ~A POSTROUTING ~o eth0 ~j SNAT --to~source 192.0.2.11
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: B | Question # 5 Answer: E |
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