17) 212.1 System security

What's the private IP addressing for class A reserved by the IANA?

• 172.16.0.0 - 172.31.255.255

• 10.255.255.255 - 10.255.255.255

• 10.0.0.0 - 10.255.255.255

• 192.168.18.0.0 - 192.168.255.255

• 10.10.0.0 - 10.255.255.255

What's the private IP addressing for class B reserved by the IANA?

• 172.16.0.0 - 172.31.255.255

• 10.255.255.255 - 10.255.255.255

• 10.0.0.0 - 10.255.255.255

• 192.168.18.0.0 - 192.168.255.255

• 172.16.0.0 - 172.30.255.255

What's the private IP addressing for class C reserved by the IANA?

• 172.16.0.0 - 172.31.255.255

• 10.255.255.255 - 10.255.255.255

• 10.0.0.0 - 10.255.255.255

• 192.168.0.0 - 192.168.255.255

• 172.16.0.0 - 172.30.255.255

What's the concept IPv6 uses, which is valid only for communications within the network segment or the broadcast domain that the host is connected to?

• Loopback

• Link-local

• APIPA

• SLAAC

• ULA

What does NAT stand for?

"It is a technique used in computer networking to translate IP addresses between different network domains. It allows devices within a local network to share a single public IP address when communicating with devices on the internet"

• TAN

• PAT

• NAT

• Proxy

• NAP

"It's a feature of the Linux kernel's networking stack that allow interception and modification of network packets as they pass through the system"

• Netfilter hooks

• Firewall

• iptables

• nftables

• Xtables-addons

Choose three different types of Netfilter Hooks:

• NF_INET_LOCAL_ROUTING

• NF_INET_PRE_ROUTING

• NF_INET_LOCAL_IN

• NF_INET_FORWARD

• NF_GLOBAL_FORWARD

Choose two different types of Netfilter Hooks:

• NF_INET_LOCAL_ROUTING

• NF_INET_POST_OUT

• NF_INET_LOCAL_OUT

• NF_INET_POST_ROUTING

• NF_GLOBAL_FORWARD

"It's called when a packet arrives to the network interface card and is about to be routed"

Which of the types of Netfilter Hooks does the above statement refer to?

• NF_INET_LOCAL_ROUTING

• NF_INET_PRE_ROUTING

• NF_INET_LOCAL_IN

• NF_INET_FORWARD

• NF_GLOBAL_FORWARD