Network Architecture

Question 1

Limit the amount of Broadcast Domains on a network using what?

Answer 1

Vlans

Question 2

What device can Route multicast and unicast Signals?

Answer 2

Layer 3 switch/Router

Question 3

Multicast is a Layer _ of IPv4 and IPv6.

Answer 3

3/Network layer

Question 4

What is the purpose of a firewall on the edge of a network?

Answer 4

To screen packets according to the ACL (Access Control List).

Question 5

Which of the following is used to define how much bandwidth can be used by various protocols on the network?

Answer 5

Traffic Shaper
(Traffic can be prioritized based on the ports used by the application sending the traffic. Delayed
traffic is stored in a buffer until the higher priority traffic has been sent.)

Question 6

What allows you to authenticate remote workers who connect from offsite?

Answer 6

Radius, 802.1x

Question 7

Which of the following provides accounting, authorization, and authentication via a centralized privileged database, as well as, challenge/response and password encryption?

Answer 7

TACACS+

Question 8

What is the difference between RADIUS and TACACS+?

Answer 8

RADIUS: Encrypts only the password, combines authentication and authorization,
TACACS+: Encrypts the entire payload, seperates authentication and authorization,

Question 9

How to set aside addresses in a DHCP pool as to allow certain servers to always get the same address?

Answer 9

Configure the reservations

Question 10

After setting up a DHCP server on the LAN segment, what options should you configure in the DHCP scope, in order to allow hosts on that LAN segment using dynamic IP addresses, to be able to access the internet and internal company servers?

Answer 10

Default gateway, Subnet mask, DNS servers.
( To access the internet, the client computers need to be configured with an IP address with a subnet mask and the address of the router that connects the company network to the internet. To be able to resolve web page URLs to web server IP addresses, the client computers need to be configured with the address of a DNS server.)

Question 11

What is the purpose of Split horizon DNS?

Answer 11

Mechanism for DNS servers to supply different DNS query results depending on the source of the request.

Question 12

What is the MX record for DNS used for?

Answer 12

Mail exchange

Question 13

What protocol uses label-switching routers and label edge routers to forward traffic?

Answer 13

MPLS

Question 14

What protocol is used on a DB-9 connector?

Answer 14

RS-232

Question 15

An F-connector is used on which of the following types of cabling?

Answer 15

RG6

Question 16

What Ethernet Standard is for multi-mode fiber?

Answer 16

10GBASE-SR

1000BASE-SX

Question 17

Cable Certifier result when used on cable?

Answer 17

The cable test will show the location of opens or shorts in the cable.

Question 18

What Topology will not fail if there is an outage on a single piece of the topology? However, the computers need to wait to talk on the network to avoid congestion.

Answer 18

Ring

Question 19

What network topology utilizes a central device with point-to-point connections to all other devices?

Answer 19

Star

Question 20

What networking topology has a central single point of failure?

Answer 20

Star

Question 21

What will allow a company to continue to maintain an internet presence at all sites in the event that a WAN circuit at one site goes down.

Answer 21

BGP (If a WAN link goes down, BGP will route data through another WAN link if redundant WAN links are available.)

Question 22

How does BGP route data?

Answer 22

BGP routes between Autonomous systems.

Question 23

What is an ASN (Autonomous System Number)

Answer 23

Unique number that’s available globally to identify an autonomous system.

Question 24

How big is a jumbo frame?

Answer 24

> 1500

Question 25

What is NAS?

Answer 25

Network attached storage. Connect to a shared storage device across the network.

Question 26

What is SAN?

Answer 26

Storage Area Network. Block-Level access.

Question 27

Explain iSCSI

Answer 27

(Internet small computer systems interface) Makes a remote disk look and operate like a local disk.

Question 28

Properties of iSCSI switching?

Answer 28

Can enable jumbo frames, over 1500.

Question 29

IP-based video conferencing deployment

Answer 29

Codec, SIP

Question 30

What is SIP?

Answer 30

Session Initiation Protocol, protocol for initiating an interactive user session that involves multimedia elements such as voice, chat, gaming, or in this case video.

Question 31

Codec

Answer 31

Term is a concatenation of “encoder” and “decoder”,

Question 32

A NAS or a SAN will either use what?

Answer 32

iSCSi or Fiber channel

Question 33

A SQL server needs several terabytes of disk space available to do an uncompressed backup of a database. Which would be the MOST cost efficient to use for this backup?
A.iSCSI San
B.FCoE San
C.NAS
D.USB flash drive

Answer 33

C. NAS

Question 34

Monitoring tool used to locate possible outages and track traffic and malicious usage on the network.

Answer 34

Network Analyzer

Question 35

Analyze and aggregate security logs.

Answer 35

SIEM

Question 36

All devices send system level information to a centralized server, the network administrator can review device error information from on e central location.

Answer 36

SYSLOG server

Question 37

What protocol must be implemented in order for two switched to share vlan information.

Answer 37

VTP