1.Which layer(s) do(es) a packet filter firewall examine? a. 1 and 2 b. 3 and 4*
ID: 3557197 • Letter: 1
Question
1.Which layer(s) do(es) a packet filter firewall examine?
a. 1 and 2
b. 3 and 4*
c. 5
d. 1 through 4
e. All layers
2.Which layer(s) do(es) a proxy firewall filter?
a. 1 and 2
b. 3 and 4
c. 5*
d. 1 through 4
e. All layers
3.Creating an IP packet that contains a counterfeit source IP address is an example of:
a. encoding.
b. spoofing.*
c. encrypting.
d. spamming.
e. hacking.
4.A packet filtering firewall that receives an incoming packet from an IP address known to be inside the firewall would most likely:
a. pass the packet on because it is a safe (internal) address.
b. discard the packet.*
c. request a retransmission.
d. recognize an error and request a retransmission.
e. write the contents of the packet to a log file and pass it on.
5.Packet filtering firewalls have the ability to examine:
a. Source IP addresses and port numbers.
b. Destination IP addresses and port numbers.
c. ICMP packets.
d. ICMP packets, source IP addresses and port numbers.*
6.Using ______ makes it difficult for hackers trying to discover which IP addresses an organization uses internally.
a. a firewall
b. encryption
c. packet sniffers
d. NAT
e. ATM
7.For outgoing packets from a network, Network Address Translation affects
a. a packet
Explanation / Answer
b. 3 and 4*
c. 5*
b. spoofing.*
b. discard the packet.*
d. ICMP packets, source IP addresses and port numbers.*
a. a firewall
d. a packet
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