CDCP Network Infrastructure and Connectivity

Question 1

Which network topology is most commonly used within a data center to provide redundancy and high availability?

Accepted Answer

Fat-tree (spine-leaf) topology

Answer

Bus topology

Answer

Ring topology

Answer

Star topology with single switch

Question 2

What is the primary purpose of a Top-of-Rack (ToR) switch in a data center?

Accepted Answer

To aggregate traffic from servers within a single rack before uplink to core switches

Answer

To connect the data center to the internet

Answer

To provide out-of-band management for all network devices

Answer

To perform deep packet inspection for security

Question 3

In data center networking, what does 'oversubscription ratio' refer to?

Accepted Answer

The ratio of total downstream bandwidth to available upstream bandwidth

Answer

The ratio of physical ports to virtual ports

Answer

The number of VLANs configured on a switch

Answer

The ratio of active to passive network devices

Question 4

Which protocol is used to prevent Layer 2 switching loops in a data center network?

Accepted Answer

Spanning Tree Protocol (STP)

Answer

OSPF

Answer

BGP

Answer

MPLS

Question 5

What is the recommended minimum fiber type for supporting 40GbE and 100GbE connections in modern data centers?

Accepted Answer

OM3 or OM4 multimode fiber

Answer

OM1 multimode fiber

Answer

OM2 multimode fiber

Answer

Single-mode fiber only

Question 6

Which feature allows a data center network to carry multiple VLANs over a single physical link between switches?

Accepted Answer

VLAN trunking (IEEE 802.1Q)

Answer

Port mirroring

Answer

Link aggregation (LACP)

Answer

Flow control (IEEE 802.3x)