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Question 1

What does AAA stand for

Answer 1

Authentication
Authorization
Accounting

Question 2

What does Radius use for authentication protocol

Answer 2

UDP, it’s also an open standard

Question 3

What does TACACS+ use for authentication protocol?

Answer 3

TCP, cisco proprietary

Question 4

Radius configuration example

Answer 4

aaa new-model
username >cisco< password >cisco<
radius server >confname<
address ipv4 >hostname< >auth-port< >acct-port<
key >string<

associate the newly created server with a servergroup
aaa group server radius >group-name<
server name >confname<

Login auth and local fallback
aaa authentication login default group >group-name< local

Question 5

TACACS configuration example

Answer 5

aaa new-model
username >cisco< password >cisco<
tacacs server >confname<
address ipv4 >hostname<
port >port-number<
key >string<
aaa group server tacacs+ >group-name<
server name >confname<
aaa authentication login default group >groupname< local

Question 6

SNMP Manager?

Answer 6

Polls agents on the network and displays information.

Question 7

SNMP Agent?

Answer 7

Stores information and responds to manager requests. Generates traps. Runs on the monitored device

Question 8

SNMP MIB?

Answer 8

Contains a database of objects.

Question 9

Differences between SNMPv1, v2c and v3

Answer 9

SNMPv1 - Plaintext authentication with community strings. No BULK retrieval.

SNMPv2c - Plaintext authentication with community strings. BULK retrieval.

SNMPv3 - Strong authentication, confidentiality and integrity + BULK retrieval.

Question 10

Mention 3 SNMPv3 security levels.

Answer 10

1. noAuthNoPriv - No authentication, no encryption.
2. authNoPriv - authentication, no encryption.
3. authPriv - Authentication + Encryption

Question 11

SNMP configuration example

Answer 11

snmp-server contact >contact_name<
snmp-server location >location<
snmp-server community >string< ro/rw

Question 12

What does C.A.V.S stand for

Answer 12

Centralization
Automation
Virtualization
Standardization

Question 13

What is IaaS?

Answer 13

Infrastructure as a Service, Provides the network only.

Question 14

What is PaaS?

Answer 14

Platform as a Service, Provides the OS and the network.

Question 15

What is SaaS?

Answer 15

Software as a Service, Provides the required software, OS and network.

Question 16

What are the SDN planes?

Answer 16

Software-Defined Networking.
Application Plane

Control Plane

Data Plane

Question 17

List some features of the Cisco APIC-EM

Answer 17

1. Network Information Database: It scans network and provides the inventory, including all network devices.
2. Network topology visualization: This feature helps you to discover and map network devices to a physical topology.
3. Zero-touch deployment
4. Identity Manager:
5. Policy Manager: Translates a business policy to a network device-level policy.
6. ACL analysis:
7. QoS deployment and change management.
8. Cisco Intelligent Wan (IWAN).

Question 18

Explain these types of QoS:

1. CoS
2. ToS
3. DSCP
4. Class Selector
5. TID

Answer 18

1. Class of Service : Used on Ethernet. 3 bits, l2 marking.
2. Type of Service: l3 marking
3. Dynamic Host Configuration Protocol: Sets a 6 bit value that “classifies traffic”
4. Class Selector:
   5: Traffic Identifier:

Question 19

Which authentication protocol does not use encryption?

PAP // CHAP

Answer 19

PAP

Question 20

What is the default encapsulation protocol on a serial interface?

Answer 20

HDLC

Question 21

Which two options are components of an OSPF hello packet?
routerID
bandwith
area ID
OSFP cost

Answer 21

routerID and area ID.