A. Frame filter
B. Packet filter
C. From the dangers of unknown resources on the internet and other network connections that may be harmful. the firewall prevents unauthorized access to your internal, trusted network from outside threats.
D. Virus filter

A. State full firewall and stateless firewall
B. Bit oriented firewall and byte oriented firewall
C. Frame firewall and packet firewall
D. Network layer firewall and session layer firewall

A. Chock point
B. Meeting point
C. Firewall point
D. Secure point

A. Packet filtering firewall
B. Dual homed gateway firewall
C. Screen host firewall
D. Dual host firewall

A. Physical layer
B. Data link layer
C. Network layer
D. Application layer

A. Physical layer
B. Data link layer
C. Network layer or transport layer
D. Application layer

A. You can control where traffic goes in three networks
B. You can do stateful packet filtering
C. You can do load balancing
D. Improved network performance

A. The source routing feature
B. The number in the header’s identification field
C. The destination ip address
D. The header checksum field in the packet header

A. Routing table
B. Bridging table
C. State table
D. Connection table

A. Robust
B. Expansive
C. Fast
D. Scalable