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A network administrator is troubleshooting the dynamic NAT that is configured on router R2.
Which command can the administrator use to see the total number of active NAT translations
and the number of addresses that are allocated from the NAT pool? (Trick question.) Ans: show
ip nat statistics
Witch two statmants are true regarding a PPP connection between two Cisco routers? (LCP)
Ans: LCP manages compression on the link.
LCP tests the quality of the link.
Which statement is a characteristic of SNMP MIBs? Ans: The NMS must have access to the
MIB in order for SNMP to operate properly.
Which SNMP message type informs the network management system (NMS) immediately of
certain specified events? Ans: Trap
Which type of traffic would most likely have problems when passing through a NAT device?
Ans: IPsec - (Internet Protocol Security, IP Security)
Which command can be used to check the information about congestion on a Frame Relay link?
Ans: show frame-relay pvc
The inside local IP address of PC-A is 192.168.0.200. What will be the inside global address of
packets from PC-A after they are translated by R1 interface FastEthernet 0/0 with ip address
209.165.200.225 (ip nat out)? Ans: 209.165.200.225
What is the required for a host to use an SSL VPN to connect to a remote network device? Ans:
A web brouser must be installed on the host.
Which circumstance would result in an enterprise deciding to implement a corporate WAN?
Ans: When its employees become distributed across many branch locations.
Which statement describes a characteristic of dense wavelength division multiplexing (DWDM)?
Ans: it can be used in long-range communications, like connections between ISPs.
What is used as the default event logging destination for Cisco routers and switches? Ans:
console line
What is a disadvantage of a packet-switched network compared to a circuit-switched network?
Ans: higher latency
, Why is it useful categorize networks by size when discussing network design? Ans: The
complexity of networking infrastructure will vary according to the number of connected devices.
The security policy in a company specifies that the staff in the sales department must use a VPN
to connect to the corporate network to access the sales data when they travel to meet customers.
What component is needed by the sales staff to establish a remote virtual connection? Ans: VPN
client software
What is a set of communication standards for simultaneous digital transmission of voice, video,
data, and other network services over the traditional circuits of the public switched telephone
network. Ans: ISDN - (Integrated Services for Digital Network)
Which three parts of a Frame Relay Layer 2 PDU are used for congestion control? Ans: The
FECN, BECN and DE bits.
Which two statements correctly describe asymmetric encryption used with an IPsec VPN? Ans:
Public key encryption is a type of asymmetric encryption.
Encryption and decryption use a different key.
Which WAN technology can serve as the underlying network to carry multiple types of network
traffic such as IP, ATM, Ethernet, and DSL? Ans: MPLS - (Multiprotocol Label Switching)
Place the options in the following order.
PAP Characteristics & CHAP Characteristics:
single challenge, encrypted passwords, strong authentication, clear text passwords, repeated
challenges, weak authentication, encrypted passwords, clear text passwords, uses two-way
handshake, strong authentication, uses three-way handshake, strong authentication, strong
authentication. Ans: PAP Characteristics: CHAP Characteristics:
uses two-way handshake uses three-way handshake
single challenge repeated challenges
weak authentication strong authentication
clear text passwords encrypted passwords
Which two statements describe remote access VPNs? Ans: Remote access VPNs support the
needs of telecommuters and mobile users.
Client software is usually required to be able to access the network.
What are two examples of network problems that are found at the data link layer? Ans:
encapsulation errors
framing errors
What is the protocol that provides ISPs the ability to send PPP frames over DSL networks? Ans:
PPPoE