CCENT Certification:
Does Layer 2 of the OSI model perform error detection, error correction, both, or neither?
Answer: The Data Link layer is capable of error detection, but not error correction.
CCNA Security Certification And CCNP / ISCW Exam:
Briefly describe the purpose of a "SYN cookie".
Answer: One defense against SYN attacks, a SYN cookie verifies the client address before actually allocating resources to that client.
CCNA Certification:
What type of OSPF router is defined as "at least one interface in Area 0, and connecting other areas to Area 0"?
A. ASBR
B. ABR
C. Internal
D. Backbone
E. External
Answer: B. That's the textbook definition of an Area Border Router (ABR).
CCNP Certification / BSCI Exam:
What term is used for the number "2" shown in the below commands?
R2(config)#router rip
R2(config-router)#redistribute ospf 1 metric 2
A. distance
B. administrative distance
C. distance
D. variance
E. seed metric
F. process number
Answer: E. The "2" is the seed metric. The "1" in the redistribute statement is the OSPF process number whose routes are being redistributed into RIP.
CCNP Certification / BCMSN Exam:
In a typical Network Management block, what switch layers are represented?
A. Access
B. Distribution
C. Core
Answers: A, B. In addition to network management devices, both Access and Distribution switches will be found here.
CCNP Certification / ONT Exam:
In regards to device tracking capabilities, what's the major difference between WCS Location and Location +2700?
Answer: Location +2700 has the capability to track up to 1500 devices simultaneously, where Location allows tracking of only one device at a time.
Look for more free Cisco practice exam questions, articles on how to start an IT career, and tutorials on my website as well as this one!