CCNA FAQ: IP Services Q1. How can you efficiently restrict the read-only function of a requesting SNMP management station based on the IP address? A. Place an ACL on the logical control plane. B. Place an ACL on the line when configuring the RO community string. C. Place an ACL on the VTY line. D. Place an ACL on all router interfaces. Answer: B. You can create and then … [Read more...]
CCNA FAQ: VLSMs, Summarization, and Troubleshooting TCP/IP
CCNA FAQ: VLSMs, Summarization, and Troubleshooting TCP/IP Q1. On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses? A. /27 B. /28 C. /29 D. /30 E. /31 Answer: D. A point-to-point link uses only two hosts. A /30, or 255.255.255.252, mask provides two hosts per subnet. Q2. In the network shown in the … [Read more...]
CCNA FAQ: Distance Vector Routing Protocols
CCNA FAQ: Distance Vector Routing Protocols Q1. What are the mitigation methods distance vector routing protocols use to avoid routing loops? Answer: Because distance vector routing protocols are susceptible to routing loops, they have incorporated several countermeasures to help mitigate any routing loop anomalies. For instance, all distanc vector routing protocols have a … [Read more...]
CCNA FAQ: Easy Subnetting
CCNA FAQ: Easy Subnetting Q1. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask? A. 14 B. 15 C. 16 D. 30 E. 31 F. 62 Answer:D. A /27 (255.255.255.224) is 3 bits on and 5 bits off. This provides 8 subnets, each with 30 hosts. Does it matter if this mask is used with a Class A, B, or C … [Read more...]
CCNA FAQ: Introduction to TCP/IP
CCNA FAQ: Introduction to TCP/IP Q1. What must happen if a DHCP IP conflict occurs? A. Proxy ARP will fix the issue. B. The client uses a gratuitous ARP to fix the issue. C. The administrator must fix the conflict by hand at the DHCP server. D. The DHCP server will reassign new IP addresses to both computers. Answer: C. If a DHCP conflct is detected, either by the server … [Read more...]
CCNA FAQ: Enhanced Switched Technologies
CCNA FAQ: Enhanced Switched Technologies Q1. You receive the following output from a switch: Which are true regarding this switch? (Choose two.) A. The switch is a root bridge. B. The switch is a non-root bridge. C. The root bridge is four switches away. D. The switch is running 802.1w. E. The switch is running STP PVST+. Answer: B, D. The switch is not the root … [Read more...]
CCNA FAQ: Advanced IP Access Control Lists
CCNA FAQ: Advanced IP Access Control Lists Q1. Which of the following fields cannot be compared based on an extended IP ACL? (Choose two answers.) e. Protocol f. Source IP address g. Destination IP address h. TOS byte i. URL j. Filename for FTP transfers Explanation: E and F. Extended ACLs can look at the Layer 3 (IP) and Layer 4 (TCP, UDP) headers, and a few others, … [Read more...]
CCNA FAQ: Frame Relay Configuration
CCNA FAQ: Frame Relay Configuration Q1. Imagine two Cisco routers, R1 and R2, using a Frame Relay service. R1 connects to a switch that uses LMI type ANSI T1.617, and R2 connects to a switch that uses ITU Q.933a. What keywords could be used in the R1 and R2 configuration so that the LMIs work correctly? a. ansi and itu b. T1617 and q933 c. ansi and q933 d. T1617 and … [Read more...]
CCNA FAQ: Frame Relay Concepts
CCNA FAQ: Frame Relay Concepts Q1. Which of the following is a protocol used between the Frame Relay DTE and the Frame Relay switch? a. VC b. CIR c. LMI d. Q.921 e. DLCI f. FRF.5 g. Encapsulation Answer: C. The LMI manages the link between the DTE and the switch, including noticing when a virtual circuit (VC) comes up or goes down. Q2. Which of the following … [Read more...]
CCNA FAQ: EIGRP
CCNA FAQ: EIGRP Question: Which of the following affect the calculation of EIGRP metrics when all possible default values are used? (Choose two answers.) a. Bandwidth b. Delay c. Load d. Reliability e. MTU f. Hop count Answer: A and B Question: How does EIGRP notice when a neighboring router fails? a. The failing neighbor sends a message before failing. b. The … [Read more...]