ccna interview questions and answers

Part - 24 CCNA Interview Questions and Answers

116 Which of the following is a layer 2 device?

A.) Switch

B.) Router

C.) Repeater

D.) Hub

Ans A

A Hub and Repeater are layer 1 devices. A Router is a layer 3 device.

117 Identify the definition of demarcation?

A.) Date in which the WAN service contract expires

B.) Cabling which extends from the WAN service provider to the customer

C.) Division of responsibility, where the CPE ends and the local loop begins

D.) Equipment which is located at the customer premises

Ans C

Demarcation is the point in which responsibility changes hands.

118 Identify the 3 key features of the Cisco Discovery Protocol?

A.) Off by default

B.) Will allow for the discovery of layer 3 addresses on neighbor routers

C.) Verify connectivity

D.) Open standard

E.) Does not require any layer 3 protocols to be configured

Ans B C E

CDP is used for 2 basic reasons; neighbor connectivity and layer 3 discovery if configured. It is proprietary and is on by default.

119 Identify the 3 characteristics of IPX RIP?

A.) Distance vector

B.) Does not support multiple paths

C.) 60 second updates

D.) Default encapsulation is SAP

E.) Uses ticks and hop count as a metric

Ans A C E

IPX RIP is a distance vector routing protocol, it does support multiple paths, the default encapsulation is 'novell-ether', it uses tick count as a primary metric and hop count as a tie breaker and it sends it’s updates every 60 seconds.

120 Identify the access-list range for an extended IP access-list?

A.) 800 - 899

B.) 1 - 99

C.) 1000 - 1099

D.) 100 - 199

Ans D

IP extended access-lists use the number range of 100-199.