1. Packet filtering firewalls are deployed on ________
a) routers
b) switches
c) hubs
d) repeaters
Explanation: Packet filtering firewalls are deployed on routers that help in connecting internal network worldwide via the internet.
2. In the ______________ layer of OSI model, packet filtering firewalls are implemented.
a) Application layer
b) Session layer
c) Presentation layer
d) Network layer
Explanation: In the network layer, which is the third layer of the OSI (Open Systems Interconnection) model, packet filtering firewalls are implemented.
3. The __________ defines the packet filtering firewall rules.
a) Access Control List
b) Protocols
c) Policies
d) Ports
Explanation: The Access Control List is a table containing rules that instruct the firewall system to provide the right access. It checks all the packets and scans them against the defined rule set by Network administrator in the packet filtering firewall.
4. ACL stands for _____________
a) Access Condition List
b) Anti-Control List
c) Access Control Logs
d) Access Control List
Explanation: The Access Control List is a table containing to check all the packets and scans them against the defined rule set by Network administrator in any particular system or firewall.
5. When a packet does not fulfil the ACL criteria, the packet is _________
a) resend
b) dropped
c) destroyed
d) acknowledged as received
Explanation: In the packet filtering firewall, when the rules defined by the Access Control List is not meet by any data packet, the packet is dropped & logs are updated in the firewall.
6. Network administrators can create their own ACL rules based on _______ ________ and _______
a) Address, Protocols and Packet attributes
b) Address, Protocols and security policies
c) Address, policies and Packet attributes
d) Network topology, Protocols and data packets
Explanation: Network administrators can create their own ACL rules based on Address, Protocols and Packet attributes. This is generally done where the specific customised type of data packets need to pass through firewall screening.
7. One advantage of Packet Filtering firewall is __________
a) more efficient
b) less complex
c) less costly
d) very fast
Explanation: Packet filtering firewalls are more advantageous because they are less costly and they use fewer resources and are used effectively in small networks.
8. Packet filtering firewalls work effectively in _________ networks.
a) very simple
b) smaller
c) large
d) very large complex
Explanation: Packet Filtering Firewalls are applied within routers which connect the internal Network system with the outside network using the internet. It works effectively if the internal network is smaller in size.
9. Packet filtering firewalls are vulnerable to __________
a) hardware vulnerabilities
b) MiTM
c) phishing
d) spoofing
Explanation: One popular disadvantage of the packet filtering technique is that it cannot support the complex models of rules and is spoofing attack-prone in some cases as well.
10. Circuit-level gateway firewalls are installed in _______ layer of OSI model.
a) Application layer
b) Session layer
c) Presentation layer
d) Network layer
Explanation: In the session layer (which is the fifth layer) of the OSI model, circuit-level gateway firewalls are deployed for monitoring TCP sessions for 3-way handshakes.