To answer some #CCNA questions, you need to think like a network analyzer (e.g., Wireshark). What values sit in the headers of an Ethernet frame or IP packet? In this next sample question, you’ll [...]
Can you predict the data link addresses in each frame that encapsulates a packet as it flows from source to destination in an IPv4 network? This latest QA requires you to think hard about those [...]
Time for some new practice questions! I’ve not added any new QA in a while, but I plan to get on a roll and add new QA to both the CCENT blog and CCNA blog for a good run of months. The plan: [...]
This latest #CCNA / #CCENT question uses a specific scenario: a working ping, a clearing of a switch MAC address table, and a repeat of the ping. The scenario hopes to make stretch a bit and [...]
#CCNA candidates learn about ARP early in the ICND1 half of their studies, and it takes just a few minutes to learn the basics. At the same time, people who write CCNA exam questions can ask us [...]
The #CCNA exam can pack a punch with what looks like a simple question, and this latest practice question is just such an example. The question asks about switch forwarding, but it combines [...]
You can learn how a LAN switch forwards frames in just a few minutes, and then explore that idea in different contexts throughout your entire span of studying for #CCENT and #CCNA Routing and [...]
Extended IPv4 ACLs? No problem. Matching packets going towards the client? A little more of a problem. Deciding whether you need to match ARP and OSPF in your ACL? Even more of a problem. This [...]
This next Extended IPv4 ACL Drill continues to focus on some key ACL concepts. You have to think about where the ACL will reside, and for what direction of packet flow, before choosing the syntax [...]
Extended Access Control Lists (ACLs) can be a challenge for many reasons. In the first few posts in this series, these ACL exercises will focus on just a few of those issues. In particular: The [...]