Infrastructure

Question 1

Which of the following connector types is associated with fiber-optic cable?

RJ-45

BNC

ST

Answer 1

ST

ST connectors are used for fiber-optic cable

Question 2

Which Cat standard is the latest standard approved by TIA/EIA?

5e

6

6A

Answer 2

6A

Cat 7 and Cat 8 variants are not recognized by TIA/EIA

Question 3

Which of the following connections would require a crossover cable?

Router to switch

Switch to switch

PC to switch

Answer 3

Switch to switch

Crossover cables are used to connect the same devices together

Question 4

What do routers use to forward packets?

Source IP address

Destination IP address

Source MAC address

Answer 4

Destination IP address

Routers match the destination IP address to a network in their routing table

Question 5

What do switches use to learn where hosts are?

Source IP address

Destination IP address

Source MAC address

Answer 5

Source MAC address

This is the reason the table that maps MAC addresses to ports on a switch is called the Source Address Table

Question 6

What do firewalls do to traffic identified as malicious?

Filter

Forward

Flood

Answer 6

Filter

Firewalls filter (block) malicious packets from either entering or exiting networks and devices

Question 7

An SVI involves assigning an IP address to what?

VLAN

Switch

Firewall

Answer 7

VLAN

Switched virtual interfaces are IP addresses assigned to VLANs and serve as default gateways for hosts on that switch

Question 8

Which device(s) can notify a firewall about an intrusion so that the firewall can take action?

Just an IPS

Both an IDS and an IPS

Neither an IDS nor an IPS

Answer 8

Both an IDS and an IPS

Intrusion detection systems and intrusion prevention systems both have capabilities to inform firewalls of intrusions

Question 9

Which one of these is not part of AAA security?

Authentication

Authorization

Auditing

Answer 9

Authentication

Auditing, while an important task, is not part of the AAA model of security

Question 10

What type of hypervisor is runs on top of an existing operating system?

Type-1

Type-2

Bare metal

Answer 10

Type-2

A hypervisor that runs on top of a host operating system is a Type-2 hypervisor

Question 11

pfSense is an example of what?

Virtual firewall

Virtual NIC

Virtual switch

Answer 11

Virtual firewall

pfSense is a very popular virtual router/firewall combination

Question 12

Which one of these technologies is the most commonly used interconnect in supercomputers?

FCoE

iSCSI

InfiniBand

Answer 12

InfiniBand

InfiniBand allows for very high throughput with very low latency, competing with Ethernet, Fibre Channel, and other technologies

Question 13

What marks where a service provider’s responsibility ends and the company’s responsibility begins?

Multiplexer

Demarc

PPP

Answer 13

Demarc

The demarcation point separates the service provider’s equipment and the company’s equipment and marks where a service provider’s responsibility ends and the company’s responsibility begins for the functioning of the network

Question 14

DOCSIS is used by which type of company?

Cable

Fiber

DSL

Answer 14

Cable

Cable companies use Data Over Cable Service Interface Specification (DOCSIS) to transmit and receive frames to and from customers

Question 15

MPLS labels are located between which two layers?

Layers 1 and 2

Layers 2 and 3

Layers 3 and 4

Answer 15

Layers 2 and 3

Multiprotocol Label Switching labels sit between the Ethernet frame at Layer 2 and the IP packet at Layer 3