Questions about Routers 1. What features does Routers have? 2. What is the conte
ID: 662519 • Letter: Q
Question
Questions about Routers
1. What features does Routers have?
2. What is the content of the routing table in a router?
3. What makes a router with a datagram containing new data and to be forwarded?
4. What does a router do when it receives routing information
5. Explain why the Internet is divided into autonomous system
6. What is usually one within an autonomous system
7. Mention examples of routing protocols used within an autonomous system
8. Which routing protocol are used between autonomous systems
9. Name three differences with the IPv4 and IPv6
10. Write an example of an IPv4 address and an IPv6 address!
11. How do you interpret the network address 200.30.22.0/23
12. Which networks subnetmask should you use in network 200.30.22.0/23
Explanation / Answer
1)
essential features for routers are
wifi access point
guest wifi access
virtual LANs and multiple SSIDs
VPN server and client
USB port for printers and routers
malware and spam protection
dual or backup WAN port
Radius server
2)
Routing table consists of information which ensures efficieent path to send datagrams to destination.
these are fields that network router contains:
i)network destination
ii)netMask
iii)gateway
iv)Interface
v)Metric
3)
First registration process will be done..so that source will know about destination address and destination will naout source.
Dayagrams will send using Care of address.
4)
As we already discussed..router table has enough information to move packets..so each packet holds information regarding source and destination addresses. So, before transmitting it will check router table so that it will choose best path to deliver packets. Then router will give next hop address to deliver.
5) INternet divided into autonomous systems. As internet provider provides both commercial and non commercial internet. Some people use internet for investigation purposes and also in development of internet services. so for this is reason internet is being divided.
6)
they have common IP datagram routing. they exchange information using same or common routing protocol.
7)
some of them are
i)border gateway protocol (BGP)
ii)Multiprotocol BGP
iii)eBGP/iBGP protocol
iv)Enhanced Interior Gateway Routing Protocol (EIGRP)
v)vector routing protocol.
8)Exterior gateway protocols are used in between autonomous systems..some of the protocols are BGP, path vector routing protocol,EIGRP..
9)
i)IPv4 is 32 bit and IPv6 is 128 bit.
ii) IPV4 addresses are biinary and represented as decimals where is IPv6 address are binarya and represented using hexadecimal numbers
iii)in IPV4 checksum field is available where it is missing in IPv6.
iv)in IPV4 options field is available where it is missing in IPv6.
v)in IPV4 broadcast messages are available where it is missing in IPv6.
10)since IPv4 address accepts onlt netween 0 and 255..here is example
1.170.20.247
IPV6 represented using hexadecimal numbers..here is example
3ffa:1800:3545:2:500:b8ff:fe41:87bf
11)
class A 1- 126
class B 128-191
class c 192-223
class D 224 - 239
class E 240 - 255
so our given address is 200.30.22.0/23
sp 200 falls under class C...
12)
given ip address is
200.30.22.0/23
11001000 . 00011110 . 00010110 .00000000
since it is class C (192-223)
network part is 11001000 . 00011110
host part is 00010110 .00000000
so subnetmask is 11111111. 11111111. 11111110.00000000
which is 255.255.254.0
the networks falls on this address can use subnet mask.
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