Question 18

Four of the eight basic security techniques are,

Hashing, Encryption, Digital Certificates, Spoofing

Hashing, Encryption, Virtual Private Networks, Deep Packet Inspection

Encryption, Digital signatures, Firewalls, Virtual Local Area Networks

Virtual Private Networks, Virtual Local Area Networks, Trunking, Firewalls

Question 19

NAT is especially useful at a residence or small business because,

It separates all devices on a network by assigning a prefix to the IP address

It provides security measures to prevent others from reading the MAC addresses of individual devices

It allows a set of computers to share the connection without additional purchases of IP addresses

It is plug-and-play, thereby reducing cost of ownership and expands limited bandwidth

Question 20

Can ARP be used on a network that does not provide broadcast? Why or why not?

Yes, if the ARP response has already been received and/or programmed in cache

Yes, this process is automatically completed by the router without LAN broadcast

No, ARP requires all incoming messages to be broadcast to determine routing

No, if the ARP response is not already in cache

Both a and d

None of the above

Question 21

What are the three ways a VPN can encrypt data for transmission across the Internet?

Payload encryption, IP-in-IP tunneling, IP-in-TCP tunneling

Payload encryption, IP-in-IP tunneling, Latency tunneling

IP-in-TCP tunneling, Latency tunneling, Header encryption

IP-in-IP tunneling, Header encryption, Payload encryption

Question 22

When a router uses a forwarding table to look up a next-hop address, the result is an IP address. What must happen before the datagram can be sent?

Destination address is extracted from the packet

Address is given a packet switch number (P) and computer identification (C)

Packet switch number (P) is compared to computer identification (C)

If the packet number is same as the computer identification, it is sent to local destination

If the packet number is different than the packet switch, it goes to the next hop

All of the above

None of the above