Interview questions!

General
5

Hello Pavithra,

Creating good interview questions takes time. Here are a couple of quick questions that come to mind:

LAN 1:

Consider the following topology:

pvst-reconvergence-topology
pvst-reconvergence-topology449×581 42.1 KB

  • SW4 is using Gi0/2 as the spanning-tree root port. What command can I use on SW4 so that Gi0/1 becomes the root port?

LAN 2

Consider the following topology:

multicast-pim-snooping-data-flood
multicast-pim-snooping-data-flood1029×522 65 KB

In the network above, S1 is our multicast source and H1 is our only multicast receiver. SW1 is forwarding multicast packets to both R2 and R3. What command(s) do we need to add to SW1 to prevent unnecessary traffic to R3?

** LAN 3**

Consider the following topology:

two-cisco-switches
two-cisco-switches1034×152 35.4 KB

There is no connectivity between H1 and H2. What commands can you use on the switches to figure out what the problem is?

WAN 1:

Consider the following topology:

network-topology-wan
network-topology-wan1000×401 52 KB

We have a small LAN network where R1, R2, and R3 run OSPF. R1 is connected to an ISP. Users behind R2 and R3 complain that they are unable to reach any networks on the Internet (like 4.4.4.4/32). The senior network engineer verified that it is not a NAT issue. What command can you use on R1 so that R2/R3 can reach the Internet?

WAN 2:

Consider the same topology as from WAN 1. The ISP is dropping all incoming traffic that exceeds 5 Mbps. What can we configure on R1 so that the ISP does not drop our outgoing traffic?