N1 Wide Area Networks Prep

Which of the following are characteristics of TACACS+? (Select two.)

• Allows two different servers (one for authentication and authorization and another for accounting).

• Uses UDP.

• Uses TCP.

• Can be vulnerable to buffer overflow attacks.

• Allows three different servers (one each for authentication, authorization, and accounting).

Which of the following technologies uses variable-length packets, adds labels to packets as they enter the WAN cloud, and uses the labels to switch packets and prioritize traffic?

• SONET

• ATM

• ISDN

• MPLS

Which of the following are methods for providing centralized authentication, authorization, and accounting for remote access? (Select two.)

• TACACS+

• EAP

• PKI

• RADIUS

• AAA

Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select two.)

• One D channel operating at 64 Kbps.

• 30 B channels operating at 64 Kbps each.

• 23 B channels operating at 64 Kbps each.

• One D channel operating at 16 Kbps.

• Two B channels operating at 64 Kbps each.

Which of the following cellular network types use MIMO to increase 3G data throughput? (Select two.)

• WiMAX

• LTE

• HSPA+

• CDMA2000

• EDGE

Which of the following describe the EDGE cellular technology? (Select two.)

• Is an extension to 3G.

• Is the first internet-compatible technology.

• Uses MIMO.

• Offers speeds of 400 to 1,000 Kbps.

Which of the following correctly describes the T1 carrier system? (Select two.)

• A single T1 channel can transfer data at 64 Kbps

• T1 lines use 48 separate channels

• T1 lines have a maximum data rate of 2.4 Gbps

• T1 lines use two pairs of copper wire

• T1 lines use four pairs of copper wire

What is the speed of an OC-3 connection?

• 34 Mbps

• 622 Mbps

• 45 Mbps

• 155 Mbps

Which of the following technologies does GSM use to allow multiple connections on the same frequency?

• Frequency-division multiple access

• Code-division multiple access

• Time-division multiple access

• Multiple-input, multiple-output

What does a remote access server use for authorization?

• CHAP or MS-CHAP

• Usernames and passwords

• Remote access policies

• SLIP or PPP