Interview Questions for Network Infrastructure Part 1
We will provide you questions and answers along with detailed explanations carefully compiled and written by our experts. Try to understand the concepts behind the questions instead of cramming the questions. These questions are helpful for interview.
| Questions | Sample answers |
|---|---|
| A question about half-duplex and full-duplex Ethernet. What are unique for halfduplex Ethernet? | Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput. |
| You are configuring a network. You use a distance vector routing protocol. What could you use to prevent rooting loops in the network? | Split horizon and Hold-down timers |
| Company wants to implement 1000mbps Ethernet. Which IEEE standards apply in this scenario? | 802.3z or 802.3ab |
| What is a LAN? limited to very short distances? | LAN is short for Local Area Network. It refers to the connection between computers and other network devices that are located within a small physical location. |
| Which of the following is a Layer 2 protocol used to maintain a loop-free network? | STP |
| To perform proper and efficient routing what must a router have? | Destination network address of an incoming packet. |
| What does ISL trunking protocol use to identify the VLAN membership of a frame over trunked links? | Frame tagging with VLAN ID |
| What is backbone network?(DAPRA) developed the TCP/IP suite of protocols. Which layer in that TCP/IP model corresponds to the OSI model’s network layer? | A backbone network is a centralized infrastructure that is designed to distribute different routes and data to various networks. It also handles management of bandwidth and various channels. |
| What are the layers of the OSI reference model? | There are 7 OSI layers: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and Application Layer. |
| What is a Link? | A link refers to the connectivity between two devices. It includes the type of cables and protocols used in order for one device to be able to communicate with the other. |
| What are firewalls? | Firewalls serve to protect an internal network from external attacks. These external threats can be hackers who want to steal data or computer viruses that can wipe out data in an instant. It also prevents other users from external networks from gaining access to the private network. |
| Describe star topology | Star topology consists of a central hub that connects to nodes. This is one of the easiest to setup and maintain. |
| What is SLIP? | SLIP, or Serial Line Interface Protocol, is actually an old protocol developed during the early UNIX days. This is one of the protocols that are used for remote access. |
| What is DHCP? | DHCP is short for Dynamic Host Configuration Protocol. Its main task is to automatically assign an IP address to devices across the network. It first checks for the next available address not yet taken by any device, then assigns this to a network device. |
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