1. Which of the following protocols is used to transport outgoing mail across networks?

A) A. POP
B) B. SMTP
C) C. IMAP
D) D. LDAP



2. A network technician receives a switch that is configured to support VLANs on its ports. At which of the following layers is this switch operating?

A) A. Layer 1
B) B. Layer 2
C) C. Layer 3
D) D. Layer 4



3. Which of the following can a network administrator use to access a network switch using standard AAA configurations?

A) A. TACACS+
B) B. Single sign-on
C) C. LDAP
D) D. Local authentication



4. After deployment of a second network link to load balance the network traffic, the quality of voice calls degrades. The network administrator discovers the voice packets are arriving at uneven intervals that cannot be handled by the voice application buffer. Which of the following actions will improve the quality of the voice calls?

A) A. Control the attenuation of the non-voice traffic across the network links
B) B. Control the latency of traffic across the network links
C) C. Control the EMI of the multimedia traffic across the network links
D) D. Control the jitter of the affected traffic across the network links



5. During a weekend event, several people reported they were unable to get onto the wireless network. On Monday, the technician could not find a problem. Which of the following is the MOST likely cause?

A) A. Cross talk
B) B. Overcapacity
C) C. Channel overlap
D) D. Wrong passphrase