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Which Networking Model do we use in NOC?

OSI

TCP/IP DoD

McDonalds

Social Democratic

What is the 3rd layer of TCP/IP?

Network Access

Transport

Internet

Application

Calculate the Subnet Mark of 255.255.255.248 and select it from the list?

/24

/23

/29

/32

What are the WAN routers referred to in Zurich Network?

Customer Equipment

Customer Edge Router

WAN router

L3 devices

What L2 field does the switch use to make forwarding decisions?

Source Address

Port Address

Destination Address

Email Address

What is a Broadcast Domain?

A domain where all members can reach each other via broadcast

An IKEA membership

A domain whrere all members connected via a shared medium

A domain/system managed by an Admisitrator

What is a VLAN?

Virtual Logical Area Number

Virtual Local Area Nomenclature

Virtual Local Area Network

Select the correct VLAN types from the list?

Switched

Routed

Data

Voice

What is a CAM table?

Content Access Memory used to build MAC tables

Content Access Memory used for table lookups and forwarding decisions

Content Memory is a happy memory from Childhood

What does the DHCP configuration contain when successful? (Select all that applies)

IP Address/Subnet

Default Gateway Address

DNS server Address

Winning Lottery numbers

What is the neighbor state of BGP peer that is not working?

Down

Idle

Established

Open

Choose all that applies. Which one from the list are the distance vector protcols?

EIGRP

OSPF

BGP

RIP

What does it mean when under #show interface Gi0/1 you see (notconnect)?

No connection

Never connected duue to TCP handshake failed

No cable connected

The port is down

What do BGP neighbors exchange when the neighborship is Established?

Metrics

Icecreams

Prefixes

Hellos

What do you do when you see that an Interface/Port utilization erratic and shows extended high utilization?

Close the ticket, noting that utilization is high

Close the ticket as BAU

Engage L2 and escalate

You don't know what erratic means

What do you do when Interface Discard rate is higher than 5 percent for a default class?

Engage L2 for further investigations

Close the ticket as per process

Panic and switch off your computer

How do you check to see if CPU is overutilized?

Show cpu util

Free

Show process cpu sorted

What do you do when you receive a Riverbed RAID Alert?

Contact the Field Engineer to check the device on site

Contact COE APM Team (coe.apm.specialists@bt.com)

Send the ticket L2

Send the ticket to ZIG_TOOLS

How do you check the status of an HSRP status?

Show stand brief

Show standby brief

Show standby

What command do you use to find the Bearer id and Provider for the problem circuit?

Node

Contact

Bearer

ASN

Why do we need to lookup logs for a BGP flap?

To find out the time of the error

To find out whether it is still occuring

To gather further evidence of the issue

To stop invalid escalations to L2

What would constitute a BGP flap? (choose all that applies)

Loss of Route to Neighbor

Interface Down on the LAN side

Interface Down/Resets

Missing area command from router configuration

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