Explore topic-wise MCQs in Engineering.

What does the command routerA(config)#line cons 0 allow you to perform next?

Which router command allows you to view the entire contents of all access lists?

Which class of IP address has the most host addresses available by default?

What command will display the line, protocol, DLCI, and LMI information of an interface?

Which protocol does Ping use?

Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?

To back up an IOS, what command will you use?

What protocol does PPP use to identify the Network layer protocol?

Which of the following commands will allow you to set your Telnet password on a Cisco router?

What does the passive command provide to dynamic routing protocols?

If you wanted to delete the configuration stored in NVRAM, what would you type?

In a network with dozens of switches, how many root bridges would you have?

What is a stub network?

If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?

Which protocol does DHCP use at the Transport layer?

Which one of the following is true regarding VLANs?

Where is a hub specified in the OSI model?

You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

Your switch has a port status LED that is alternating between green and amber. What could this indicate?

You need to allow one host to be permitted to attach dynamically to each switch interface. Which two commands must you configure on your catalyst switch to meet this policy?

1. Switch(config-if)# ip access-group 10
2. Switch(config-if)# switchport port-security maximum 1
3. Switch(config)# access-list 10 permit ip host 1
4. Switch(config-if)# switchport port-security violation shutdown
5. Switch(config)# mac-address-table secure

What command will display the forward/filter table?

If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

What is the result of segmenting a network with a bridge (switch)?

1. It increases the number of collision domains.
2. It decreases the number of collision domains.
3. It increases the number of broadcast domains.
4. It decreases the number of broadcast domains.
5. It makes smaller collision domains.
6. It makes larger collision domains.

Layer 2 switching provides which of the following?

1. Hardware-based bridging (ASIC)
2. Wire speed
3. Low latency
4. Low cost

Which command is used to upgrade an IOS on a Cisco router?

Which command is used to determine if an IP access list is enabled on a particular interface?

Which of the following is considered to be the address after translation?

A default Frame Relay WAN is classified as what type of physical network?

What does the command o/r 0x2142 provide?

What command is used to create a backup configuration?

You have 10 users plugged into a hub running 10Mbps half-duplex. There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server?

What is the frequency range of the IEEE 802.11b standard?

You have a Cisco mesh network. What protocol allows multiple APs to connect with many redundant connections between nodes?

Which statement(s) about IPv6 addresses are true?

1. Leading zeros are required.
2. Two colons (::) are used to represent successive hexadecimal fields of zeros.
3. Two colons (::) are used to separate fields.
4. A single interface will have multiple IPv6 addresses of different types.

Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router?

1. 172.16.1.100
2. 172.16.1.198
3. 172.16.2.255
4. 172.16.3.0

Which two statements describe the IP address 10.16.3.65/23?

1. The subnet address is 10.16.3.0 255.255.254.0.
2. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
3. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.
4. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

A network administrator is connecting hosts A and B directly through their Ethernet interfaces, as shown in the illustration. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts?

1. A crossover cable should be used in place of the straight-through cable.
2. A rollover cable should be used in place of the straight-through cable.
3. The subnet masks should be set to 255.255.255.192.
4. A default gateway needs to be set on each host.
5. The subnet masks should be set to 255.255.255.0.

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?

You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?

1. Switch
2. NIC
3. Hub
4. Repeater
5. RJ45 transceiver

Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.

Which of the following describe router functions?

Why does the data communication industry use the layered OSI reference model?

1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.
3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.
4. It encourages industry standardization by defining what functions occur at each layer of the model.

A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this host?

You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?

You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

What is the subnetwork number of a host with an IP address of 172.16.66.0/21?

The network address of 172.16.0.0/19 provides how many subnets and hosts?

How to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?