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Cnna4 v4.0 Ewan final
Cisco 4 EWAN v4.0 final test study
52
Computer Networking
Undergraduate 1
04/06/2014

Additional Computer Networking Flashcards

 


 

Cards

Term
What functionality do access control lists provide in the implementation of dynamic NAT on a Cisco router?
Definition
define which addresses can be translated
Term
Which three guidelines would help contribute to creating a strong password policy? (Choose three.)
Definition
  • Deliberately misspell words when creating passwords.


  • Create passwords that are at least 8 characters in length.


  • Use combinations of upper case, lower case, and special characters.
Term

[image]

Refer to the exhibit. Every time the administrator reboots this router, the boot process ends in setup mode. What is a possible problem?

Definition
The configuration register is set to ignore the startup configuration.
Term
Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?
Definition
CIR
Term

[image]

Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp server command shows “DHCPD: there is no address pool for 10.1.1.1″. What is the problem?

Definition
The pool of addresses for the 10Network pool is incorrect.
Term
Which data link layer encapsulation protocol is used by default for serial connections between two Cisco routers?
Definition
HDLC
Term

[image]

Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request that enters interface s0/0/0 and is destined for an FTP server at IP address 192.168.1.5?

Definition
The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router.
Term
Compared with IDS systems, what can IPS systems do to provide further protection of computer systems?
Definition
stop the detected attack from executing
Term
Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP at speeds comparable to DSL and cable?
Definition
WiMAX
Term
A network administrator has changed the VLAN configurations on his network switches over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?
Definition
Conduct a performance test and compare with the baseline that was established previously.
Term
[image]Refer to the exhibit. What is the meaning of the term dynamic in the output of the command?
Definition
The mapping between DLCI 100 and 172.16.3.1 was learned through Inverse ARP.
Term
Which type of ACL will permit traffic inbound into a private network only if an outbound session has already been established between the source and destination?
Definition
reflexive
Term
Which two statements are true about IPv6 link local addresses? (Choose two.)
Definition

 

  • They begin with the 2000::/3 prefix.
  • They are assigned by IANA to an organization.
Term
A company is looking for a WAN solution to connect its headquarters site to four remote sites. What are two advantages that dedicated leased lines provide compared to a shared Frame Relay solution? (Choose two.)
Definition
  • reduced jitter
  • reduced latency
Term

[image]

Refer to the exhibit. A network administrator is trying to connect R1 remotely to make configuration changes. Based on the exhibited command output, what will be the result when attempting to connect to R1?

Definition
a successful connection and ability to make configuration changes
Term
What are two effective measures for securing routers? (Choose two.)
Definition
  • Protect all active router interfaces by configuring them as passive interfaces.

 

  • Configure remote administration through VTY lines for Telnet access.
Term
An issue of response time has recently arisen on an application server. The new release of a software package has also been installed on the server. The configuration of the network has changed recently. To identify the problem, individuals from both teams responsible for the recent changes begin to investigate the source of the problem. Which statement applies to this situation?
Definition
It will be difficult to isolate the problem if two teams are implementing changes independently.
Term

[image]

Refer to the exhibit. From the output of the show interfaces and ping commands, at which layer of the OSI model is a fault indicated?

Definition
network
Term
Which technology is used to dynamically map next hop, network layer addresses to virtual circuits in a Frame Relay network?
Definition
Inverse ARP
Term
An administrator learns of an e-mail that has been received by a number of users in the company. This e-mail appears to come from the office of the administrator. The e-mail asks the users to confirm their account and password information. Which type of security threat does this e-mail represent?
Definition
phishing
Term

[image]

Refer to the exhibit. Which data transmission technology is being represented?

Definition
TDM
Term

[image]

Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?

Definition
The VTP domain names do not match
Term
What is the result of adding the global command service password-encryption to the configuration of a router?
Definition
All services must provide an encrypted password to function.
Term
While troubleshooting a problem with an e-mail server, an administrator observes that the switch port used by the server shows “up, line protocol up”. The administrator cannot ping the server. At which layer of the OSI model is the problem most likely to be found?
Definition
network layer
Term
Where does a service provider assume responsibility from a customer for a WAN connection?
Definition
demarcation point
Term
What will be the result of adding the command ip dhcp excluded-address 192.168.24.1 192.168.24.5 to the configuration of a local router that has been configured as a DHCP server?
Definition
The DHCP server will not issue the addresses ranging from 192.168.24.1 to 192.168.24.5.
Term

[image]

Refer to the exhibit. Partial results of the show access-lists and show ip interface FastEthernet 0/1 commands for router Router1 are shown. There are no other ACLs in effect. Host A is unable to telnet to host B. Which action will correct the problem but still restrict other traffic between the two networks?

Definition
Reverse the order of the TCP protocol statements in the ACL.
Term

[image]

Refer to the exhibit. The corporate network that is shown has been assigned network 172.16.128.0/19 for use at branch office LANs. If VLSM is used, what mask should be used for addressing hosts at Branch4 with minimal waste from unused addresses?

Definition
/22
Term

[image]

Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1 and R3 have not received any RIP routing updates. What will fix the issue?

Definition
Enable RIP authentication on R2.
Term

[image]

Refer to the exhibit. This serial interface is not functioning correctly. Based on the output shown, what is the most likely cause?

Definition
PPP negotiation failure
Term
Which statement is true about PAP in the authentication of a PPP session?
Definition
PAP uses a two-way handshake.
Term
An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. The administrator receives an error message when trying to enter the IPv4 routes into RIPng. What is the cause of the problem?
Definition
IPv4 is incompatible with RIPng.
Term
What is tunneling?
Definition
encapsulating an entire packet within another packet for transmission over a network
Term
Which statement is true about NCP?
Definition
Each network protocol has a corresponding NCP.
Term

[image]

Refer to the exhibit. A network administrator is creating a prototype to verify the new WAN design. However, the communication between the two routers cannot be established. Based on the output of the commands, what can be done to solve the problem?

Definition
Configure RA with a clock rate command.
Term

[image]

Refer to the exhibit. Based on the output as shown, which two statements correctly define how the router will treat Telnet traffic that comes into interface FastEthernet 0/1? (Choose two).

Definition
  • Telnet to 172.16.10.0/24 is permitted.

 

  • Telnet to 172.16.20.0/24 is denied.
Term
Which Frame Relay flow control mechanism is used to signal routers that they should reduce the flow rate of frames?
Definition
FECN
Term

[image]

Refer to the exhibit. A network administrator configures a standard access control list on Router1 to prohibit traffic from the 192.168.0.0/24 network from reaching the Internet. The access control list also permits traffic from the 192.168.0.0/24 network to reach the 192.168.1.0/24 network. On which interface and in which direction should the access control list be applied?

Definition
interface S0/0/0, outbound
Term
Which configuration on the vty lines provides the best security measure for network administrators to remotely access the core routers at headquarters?
Definition

[image]

3rd option

Term

[image]

Refer to the exhibit. What can be concluded from the exhibited output of the debug ip nat command?

Definition
The 192.168.0.0/24 network is the inside network.
Term
A network administrator is instructing a technician on best practices for applying ACLs. Which suggestion should the administrator provide?
Definition
Extended ACLs should be applied closest to the source that is specified by the ACL.
Term

[image]

Refer to the exhibit. Headquarters is connected through the Internet to branch office A and branch office B. Which WAN technology would be best suited to provide secure connectivity between headquarters and both branch offices?

Definition
VPN
Term
Which three physical network problems should be checked when a bottom-up troubleshooting approach has been chosen to troubleshoot network performance? (Choose three.)
Definition
  • cable connectivity
  • high collision counts
  • high CPU utilization rates
Term

[image]

Refer to the exhibit. A network administrator is attempting to configure a Frame Relay network. The administrator enters the commands as shown in the exhibit on R2, but the Frame Relay PVCs are inactive. What is the problem?

Definition
The incorrect DLCI numbers are being configured on R2.
Term
Which IP address and wildcard mask would be used in an ACL to block traffic from all hosts on the same subnet as host 192.168.16.43/28?
Definition
access-list 10 deny 192.168.16.43 0.0.0.16
Term
Which combination of Layer 2 protocol and authentication should be used to establish a link without sending authentication information in plain text between a Cisco and a non-Cisco router?
Definition
PPP with CHAP
Term
When would the multipoint keyword be used in Frame Relay PVCs configuration?
Definition
when participating routers are in the same subnet
Term
A network technician analyzes the network and notices late collisions. The collisions occur accompanied by jabber that originates from the server. What is the likely cause of the problem?
Definition
web server CPU overload
Term

[image]

Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. Host A has sent a packet to the web server. What is the destination IP address of the return packet from the web server?

Definition
172.30.20.1:3333
Term

[image]

Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to ping the default gateway. What is the cause of the problem?

Definition
Port Fa0/2 on S2 is assigned to the wrong VLAN.
Term
A network administrator is tasked with maintaining two remote locations in the same city. Both locations use the same service provider and have the same service plan for DSL service. When comparing download rates, it is noticed that the location on the East side of town has a faster download rate than the location on the West side of town. How can this be explained?
Definition
The service provider is closer to the location on the East side.
Term
When Frame Relay encapsulation is used, what feature provides flow control and exchanges information about the status of virtual circuits?
Definition
LMI
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