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- CCNA Routing and Switching 200-125
106.
Which is a benefit of using TACACS+ for authentication of users?
- A.It is an open standard.
- B.It encrypts the password of users.
- C.It supports authenticating a user to a subset of commands.
- D.It supports authenticating a user to a length of time.
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| TACACS+ is a Cisco defined protocol. One of the useful features it has is that itcan authenticate a user and only allow that user to access certain commands on the router or switch. |
107.
Which port and protocol does TACACS+ use?
- A.UDP/69
- B.TCP/74
- C.UDP/47
- D.TCP/49
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| TACACS+ uses TCP and port 49 for communications between the switch or router and the AAA server. |
108.
Which is an authentication protocol for AAA servers to secure Telnet
authentication?
- A.802.1x
- B.TACACS+
- C.AD
- D.EAP
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| TACACS+ (Terminal Access Controller Access Control System) is a protocol used for communications between a switch or router and the AAA server for authenticating users. |
109.
Which protocol and port does RADIUS authentication use?
- A.UDP/1845
- B.UDP/1645
- C.TCP/1645
- D.UDP/1911
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| RADIUS authentication uses the UDP protocol and port 1645 for communications between the switch or router and the AAA server. |
110.
Which server will centralize authentication for all Cisco routers and switches?
- A.Active Directory server
- B.AAA server
- C.802.1x server
- D.Terminal server
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The AAA server will centralize authentication for Cisco routers and switches. AAA stands for authentication, authorization, and accounting. It is pronounced “triple A.” |
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