NETWORKING Flashcards
HTTP is a protocol that operates at what layer of the OSI model?
- Layer 3
- Layer 4
- Layer 6
- Layer 7
• Layer 7
In which layer do switches operate?
- Layer 1
- Layer 2
- Layer 3
- Layer 4
• Layer 2
Which of the following devices operates ONLY at the Physical Layer?
- Router
- Network Firewall
- Network Hub
- Network Switch
• Network Hub
Which of the following describes a star topology network?
- All devices are connected to a central device, such as a network switch
- Each device is directly connected to every other device
- All devices are connected to a single cable Each device is directly connected to two other devices, such that data can
- flow through a series of devices to get between two points
• All devices are connected to a central device, such as a network switch
What are the 4 steps followed by a DHCP Client to obtain an IP Address?
- DHCPDiscover, DHCPOffer, DHCPRequest, DHCPAck
- DHCPDiscover, DHCPOffer, DHCPAssign, DHCPAccept
- DHCPRequest, DHCPReply, DHCPAssign, DHCPAccept
- DHCPRequest, DHCPResponse, DHCPAssign, DHCPAccept
DHCPDiscover, DHCPOffer, DHCPRequest, DHCPAck
(Remember DORA!)
Several computers on your network are being assigned the wrong DNS server IP address. You visit them and verify that they are using DHCP. What might be a possible cause?
- The DHCP server has issued all of the DNS server IP addresses in its pool
- The DHCP server lease pool is exhausted
- The DNS server is offline, so the DHCP server is redirecting traffic
- Someone has setup another DHCP server
Someone has setup another DHCP server
To communicate with the IP address 192.168.200.100, what gateway will your computer use?
- It will use 192.168.200.15
- It will use the Default Route
- 192.168.200.25, which is a static route in the computer routing table
• It will use 192.168.200.15
To communicate with the IP address 192.168.100.6, what gateway will your computer use?
- 192.168.100.1, which is its default gateway
- 192.168.100.5, which is a static route
- None. It is on the same LAN as your computer.*
• None. It is on the same LAN as your computer.
What would the default subnet mask be for the IP range 172.16.0.0/16?
- 0.0.0
- 255.0.0
- 255.248.0
- 255.255.0
255.255.0.0
There are two devices with the IP addresses 10.10.5.5 and 10.10.10.10. Which of the following subnet masks will logically place both devices on the same network?
- 255.0.0
- 255.255.0
- 255.255.128
- 255.255.248
255.255.0.0
True or False: In order to communicate with devices on the same subnet, a computer must communicate with its Default Gateway.
False
Host 1 (192.168.6.10/24) wants to send a packet to Host 2 (192.168.47.35/24). Which path will this packet take to reach its destination, assuming that both 192.168.6.0 and 192.168.47.0 are in the gateway’s routing table?
Host 1 -> Internet -> Host 2
Host 1 -> default gateway -> Host 2
Host 1 -> default gateway -> Internet -> Host 2
Host 1 -> Host 2
Host 1 -> default gateway -> Host 2
What are the 4 steps followed by a DHCP Client to obtain an IP Address?
DHCPDiscover, DHCPOffer, DHCPRequest, DHCPAck
DHCPDiscover, DHCPOffer, DHCPAssign, DHCPAccept
DHCPRequest, DHCPReply, DHCPAssign, DHCPAccept
DHCPRequest, DHCPResponse, DHCPAssign, DHCPAccept
DHCPDiscover, DHCPOffer, DHCPRequest, DHCPAck
Remember DORA!
Several computers on your network are being assigned the wrong DNS server IP address. You visit them and verify that they are using DHCP. What might be a possible cause?
The DHCP server has issued all of the DNS server IP addresses in its pool
The DHCP server lease pool is exhausted
The DNS server is offline, so the DHCP server is redirecting traffic
Someone has setup another DHCP server
Someone has setup another DHCP server
To communicate with the IP address 192.168.200.100, what gateway will your computer use?
It will use 192.168.200.15
It will use the Default Route
192.168.200.25, which is a static route in the computer routing table
It will use 192.168.200.15
To communicate with the IP address 192.168.100.6, what gateway will your computer use?
192.168.100.1, which is its default gateway 192.168.100.5, which is a static route None. It is on the same LAN as your computer.
None. It is on the same LAN as your computer
Which of the following is true about the types of routes a router can support?
Routers can support direct routes or static routes
Routers can support static routes , direct connected routes and dynamic routes
Routers can support static routes or dynamic routes but not both
Routers only support direct connected routes
Routers can support static routes , direct connected routes and dynamic routes
Which of the following methods does RIP Version 1 support for authenticating route updates?
MD5 Passwords
SHA1 Passwords
Cisco Secret 7 passwords
No Authentication is supported
No Authentication is supported
Fragmentation occurs at which layer(s) of the OSI model?
Fragmentation occurs at Layer 3 only
Fragmentation occurs at Layer 2 and Layer 4
Fragmentation occurs at Layer 2, Layer 3 and Layer 4
Fragmentation occurs at Layer 3 only
If an attacker sent a fragmented packet containing “GET /etc/junker” followed by a packet containing “shadow” such that the word shadow overwrites the word junker when it is reassembled, what type of IDS evasion technique has the attacker employed?
Fragment Overwrite attack
Overlapping Fragment attack
Temporal IDS Evasion
Tiny fragment attack
Overlapping Fragment attack
True or False: Your computer has an IP address of 192.168.100.5. When you access www.sans.org 192.168.100.5 will be recorded in their web server logs.
False
Which of the following network IP addresses must use NAT to access resources on the Internet?
10.5.4.2
172.16.52.4
192.168.1.4
All of the above
All of the above
Which of the following best describe how “TRACERT.EXE” identifies all the hops in a route?
- It increments TTL values and receives ICMP Echo Responses
- It increments TTL values and receives ICMP Time Exceeded in Transit messages
- It increments RouteCount and receives ICMP Echo Responses
- It increments RouteCount values and receives ICMP Time Exceeded in Transit messages
•It increments TTL values and receives ICMP Time Exceeded in Transit messages
You want to configure your firewall to allow people inside your network to ping anyone, but not allow anyone outside your network to traceroute anything behind your firewall. How should you configure it?
- Block all ICMP
- Block all ICMP Echo Responses
- Block all outbound ICMP
- Block all outbound ICMP Time Exceeded in Transit
•Block all outbound ICMP Time Exceeded in Transit
