networking and communication Exam #1 Questions with Correct
Answers
If you have purchased the following IP address 182.134.160.0/20, and you want
to divide it into 15 subnets. How many bits will be used in the subnet to show the
subnet prefix part (or subnet ID)? - ✔✔24
What are the two key network layer functions? - ✔✔forwarding and routing
When looking for forwarding table entry for a given destination address, use the
longest address prefix that matches destination address. - ✔✔true
A _________ is a device interfaces that can physically reach each other without
passing through an intervening router. - ✔✔subnet
__________ is usually used to display a computers IP address settings -
✔✔ipconfig
The source port number a client utilizes to send a discover or request message to
a DHCP server is - ✔✔68
DHCP can only return an allocated IP address on a subnet. - ✔✔false
To determine the network prefix based on an IP address, we can use a logical AND
operation between the IP address and the subnet mask. - ✔✔true
, Both IPv4 and IPv6 fragments datagram when the size of the datagram exceeds
MTU(Maximum Transmission Unit). - ✔✔false
End hosts within the same subnet has the same IP address. - ✔✔false
Under IPv4, the datagram fragmentation is done by the router and the
reassembly of the datagram is done by the router at the next hop (the next router
on the routing path). - ✔✔false
IPv6 provides many more number of IP addresses compared with IPv4. - ✔✔true
Your network address is 126.49.192.0. what is the best CIDR prefix you should
purchase so that allows you to have 85 host addresses? - ✔✔/25
Which IP address expressed in CIDR notation has the subnet mask 255.255.248.0?
- ✔✔172.16.88.222/21
The following figure shows the NAT table of a router recorded when there is a
host with IP 10.0.0.2 trying to load a webpage from 209.212.159.183. Based on
the provided information and how NAT works as discussed in class, what will be
srcIP, srcPort, dstIP, dstPort we will see in message labelled #4? -
✔✔S:209.212.159.183, 443
D:10.0.0.2, 12345
The last 64 bits of an IPv6 address are the interface identifier. What is frequently
used as part of the interface identifier? - ✔✔MAC address
Answers
If you have purchased the following IP address 182.134.160.0/20, and you want
to divide it into 15 subnets. How many bits will be used in the subnet to show the
subnet prefix part (or subnet ID)? - ✔✔24
What are the two key network layer functions? - ✔✔forwarding and routing
When looking for forwarding table entry for a given destination address, use the
longest address prefix that matches destination address. - ✔✔true
A _________ is a device interfaces that can physically reach each other without
passing through an intervening router. - ✔✔subnet
__________ is usually used to display a computers IP address settings -
✔✔ipconfig
The source port number a client utilizes to send a discover or request message to
a DHCP server is - ✔✔68
DHCP can only return an allocated IP address on a subnet. - ✔✔false
To determine the network prefix based on an IP address, we can use a logical AND
operation between the IP address and the subnet mask. - ✔✔true
, Both IPv4 and IPv6 fragments datagram when the size of the datagram exceeds
MTU(Maximum Transmission Unit). - ✔✔false
End hosts within the same subnet has the same IP address. - ✔✔false
Under IPv4, the datagram fragmentation is done by the router and the
reassembly of the datagram is done by the router at the next hop (the next router
on the routing path). - ✔✔false
IPv6 provides many more number of IP addresses compared with IPv4. - ✔✔true
Your network address is 126.49.192.0. what is the best CIDR prefix you should
purchase so that allows you to have 85 host addresses? - ✔✔/25
Which IP address expressed in CIDR notation has the subnet mask 255.255.248.0?
- ✔✔172.16.88.222/21
The following figure shows the NAT table of a router recorded when there is a
host with IP 10.0.0.2 trying to load a webpage from 209.212.159.183. Based on
the provided information and how NAT works as discussed in class, what will be
srcIP, srcPort, dstIP, dstPort we will see in message labelled #4? -
✔✔S:209.212.159.183, 443
D:10.0.0.2, 12345
The last 64 bits of an IPv6 address are the interface identifier. What is frequently
used as part of the interface identifier? - ✔✔MAC address
